Max lift stock 460 heads.
Max lift stock 460 heads i ran a 270 280 @ . Very nice off-idle to 5000 rpm set up that worked well with factory rocker arms, heads, and bottom end. 579" You want . 5/460) - What Lift- 460ci stock valvetrain ? - Hello, could some-one please tell me what maximum lift i can get from a camshaft without having to go to roller rockers and screw in studs, Im planning to buy good brand lifters - springs- pushrods and rockers . 539/. . Reef Blue '93 LX 5. 700" lift or more to get Nov 18, 2009 · Hi guys, I have never built a motor with stock valve train with this big of a cam (. 470). Be careful with Long Duration, High Lift roller cams as "valve to valve" can become an issue when maximum sized valves are used. D Sep 22, 2010 · cams break down like that from improper break-in usually either too high spring pressure (if you are going dual spring take out the inners for break-in) or lack of zinc in modern oils (they sell zddp additive for break-in) or they dont do the rev guidelines for break-in (bring it immediately to 2000rpm and bounce it from 2000-2500rpm for 20-30 min no idling/driving) Feb 10, 2014 · Screw in studs for rocker arm shaft #6009. of torque at 4500 rpm with the Performer RPM Total Power Package. I got mine back in 1992. Trouble is, I want to run a solid roller but no one seems to make one with less than . " What about max lift on the cast iron non-adjustable rail rocker arms used on the C8-DOVE and the adjustable stamped steel rocker arms used on the CJ and PI Jan 12, 2015 · They did this by increasing the ramp speed as the valve opens, and slowing it as it closed. 700" valve lift than . I have a 514 max lift wondering if the stock springs will work Jan 9, 2009 · specs are - 1970 429 bored 30 over, stock crank and piston rods. 465), stock unmodified GM Vortec Heads, Edelbrock Performer EPS Vortec intake manifold and headers, Do you think I could achieve my goal of minimum 300 hp? PowerPort® cylinder heads for Ford 429/460 engines deliver significant horsepower and torque gains over similar-style cylinder heads. Then run around an . 850 - 1. 588" exh lift at the valves. Jan 22, 2003 · Big Block V8 - 385 Series (6. If I use my stock L82 cam (. The Blue Thunder 460 cylinder head is available in six configurations. May 8, 2009 · Without modifying the heads I know you can run a Comp 292H cam, which is . Mar 31, 2008 · And in regards to the unported TFS street heads vs. 050, . Apr 6, 2018 · The original answer was related to modifying the heads to accept more valve lift. 6 rockers i know the valve lift will be about . Trick Flow PowerPort® cylinder heads for Ford 429/460 engines deliver significant horsepower and torque gains over similar-style cylinder heads. Maximum Power from Ported Heads Courtesy of Scott Johnson With well worked max effort dove heads you can expect a maximum of about 700 to 725 HP given the intake port flow capabilities of Apr 28, 2010 · The HO 068 cam has about 0. Oct 26, 2008 · Same cam same stock springs but no shims. Thanks. the '915 heads should be limited to around . Mar 4, 2009 · Scoll down to C-Heads on Smaller bore. A. nuts ) Pistons: Any 429/460 application Rocker arms: 1. 656" exhaust. In the world of aluminum heads for the 460 as far as I can see is the AFR heads and the 280cc will work good for the stock displacement and beyond if so desired to go up n cubes later. There were a couple of these used in LT1 motors. stems. 76" exhaust valves will help with low and mid lift flow appreciably. This usually occurs above . Feb 11, 2012 · The Ramjet 350 has stock vortec heads, roller cam, 1. 562" intake and . 26x1. Thats . Feb 14, 2016 · On a stock iron head GTO 400CI, going over . They only have a max. 700" valve lift before flattening out. The object of this is to go as fast as possible for a ridiculously small investment. 447 lift with 1. 500" lift the head will produce a better power curve than if the valve must be opened to . 18-bolt design cylinder heads are compatible with Ford Racing M-6010-A500 460 race block only. If i decide to go to 1. 08/1. 475 inch of valve lift, but this is a very tight number. Serious horsepower for your Big Block Ford engine, heads sold individually. You can have the stock guides machined for PC seals but they are usually cut to . 572 lift and it liked to snap the shafts on the rocker arms until I upgraded them. 74 valves will usually flow 210-220 cfm at . 600″ valve lift when the air flow is high. Jan 15, 2012 · That Lunati cam is about the same specs as the old comp 268HE cam and will work fine. Not to mention that the stock heads would only suport about . Isky 264 Mega cam is similar with 216-216 dur. 16. Later I ran a 296 adv duration cam with . Intake valves have 5/16 in. 499 in. Will be a track/weekend warrior cruiser. /279 exh. My daily, (93' 350 TBI) is going to be running . 5:1 compression with 64cc heads and piston that could handle max . and even if the factory guides are good, the extra spring pressure will wipe them out quickly and the new guides will be . 80s or 10. 460 - . The details on how to increase the retainer-to-seal clearance can be found in the article and comments here: [READ: Ask Away! with Jeff Smith: Blueprint for a Budget Small Block Chevy Build] Jun 29, 2008 · The max lift was 0. 506" min / . 470" lift won't really produce more power. I always use the clay on pistons and roll the motor over with the head and cam assembly together. 5 50. 481" Vortec limit. May 21, 2013 · What is about the maximum camshaft lift for intake and ex you can use with the stock valvtrain rocker arms, Max cam lift for stock valvetrain. Some knuckle heads are saying 0. I would like to get as Jan 23, 2011 · When you have the heads done and new guides installed have them machine the guides for pc seals and this will open up alot of possibilties. Head studs; either the regular A-429 or Edelbrock studs and you don't use a washer on the outside row, or better yet the ARP # 255-4301 for the old Blue Thunder heads. com. We turned the exhausts to 1. GM Performance Parts literature claims that the stock head is limited to no more than 0. Heads were stock with a 3 angle valve job and had the exhaust bump ground out. He knows more then anyone and can give you the best info anyone ever can. Dec 26, 2010 · With COMP Cams 252H (with 0. " What about max lift on the cast iron non-adjustable rail rocker arms used on the C8-DOVE and the adjustable stamped steel rocker arms used on the CJ and PI May 9, 2006 · 335 Series- 5. 529 Max lift. 477. 850 lift. 8/351M, 6. If the d3s are milled and the block milled compression might be in the mid to high 10s compression wise. The stock springs can support about . 530-. 487 int. If there flat tops with D3s compression is going to be over 10 to 1. 455 a bunch and plan on sticking one in the engine i'm working on now, but it's more of a stock replacement/smooth idle cam. It all really depends on how things were machined. What are the stock specs for a 1973-1979 & 1980 and later 460 ford truck engine. 429/460 Ford Cylinder Heads. Clue to a good port. 550 lift and 223/227 dur @. Apr 1, 2009 · Well almost completely stock with the exception of roller rockers and a valve spring kit, what is the biggest lift these heads can handle stock? Stock DOVE-C heads on a stock DIVE926 block with mild bolt-ons. Or . 5/460) - max cam lift on stock 78 f-150 460 - I cannot find the specification anywhere. The torker II ran the best for performace even ran around town in 2nd gear down to idle speeds and pulled away better than either of the other intakes even Mar 31, 2016 · D3s are the open chamber heads a 71 460 had flattop pistond stock OP dose not say what pistons are used. They should have a 2. 500 inch lift (flow stalled above . In a best case scenario you will break a timing chain and bend the valves that are still open as the piston cycles up and down in the cylinder. Around 0. Everything else I have built is been under . 400 lift for intake or exhaust. My mild single pattern cam sports . One pump of the pedal and it starts up instantly. You have . Jul 20, 2005 · A) I’d like to have around 9. 73 ratio- TFS-53400621 Stud Girdle: N/A Oct 7, 2008 · It is generally accepted that 0. On the other two sets, one was set up for a CC 268H with . 5:1. How much lift? - How much lift can the stock heads take before retainer to guide clearance becomes an issue? Nov 23, 2010 · We are going to require stock lift +/- and pull a certain amount of vaccum maybe 15"-17". 600 lift. Lem, makes a good point, there are better heads out there such as the A460 heads. 570 lift cams (optional valve springs available for any lift cam, see Ford 429-460 heads below). 530 - 0. 060 inches clearance needs to be maintained between the retainer and seal (0. Feb 28, 2015 · Add the valve diameters together, (intake and exhaust), and a maximum of 4. at . 500" and require a different seal. 500 for 9. 083" intake and 1. if i could ever get the car to hook up all the time i'd have a screamer! Oct 13, 2006 · As 327NUT said the Vortecs are the way to go but to run that cam with a new set of Vortecs re quire then to be reworked as I believe there is a max lift of . 648 lift at the intake valve. Jul 11, 2002 · Stage 1: Assembled with stainless steel valves, complete valve job, Manley chrome moly retainers and locks, Viton valve stem seals and Isky double valve springs for up to . Maximum Power from Ported Heads Courtesy of Scott Johnson Jan 10, 2023 · Much of this gain over the stock 345-hp Boss 302 rating can be attributed to Westech's lower 140-degree engine coolant test procedure and open dyno headers. That would be assuming your stock springs are new or near new. Wouldn't go much bigger than . Both of these heads are 1997 castings, and I'm pretty sure they're off the same engine. 52 roller rockers. 7 rockers I bolted on to my stock E7 heads with the stock springs? Mach 460. 550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, . Dec 28, 2004 · C3 Tech/Performance - Limits of Vortec Heads - I found that you need to mill the valve spring area on the vortec heads to except a higher lift cam. AFR designed the 300cc heads for a maximum . I have a membership to Scotty J's site so it looks like that part of the mission is done. 560"valve lift MAXIMUM; maybe some heads might allow very slightly more. 480 lift , unless the guides are trimmed. 460" ,lock protruded below the Jan 11, 2013 · I used the Scorpion pedestal mount roller rockers on D3 heads with a Lunati VooDoo cam with . 11 gears, 31. They have have a hydraulic flat tappet only rule. But doesn't show spring pressure at installed height. 100 65. Sep 18, 2017 · I've used the 272-. the summit 6401 is a good cam for a near stock engine, but smooth idle. There is a lot more to a cam than just the lift. 530" o. Trick Flow’s potent PowerPort® A460 340 cylinder heads for Ford 429/460 are ideal for use in drag racing, monster trucks, tractor pulling, and other ultra high power, large cubic inch engine combinations. M. lift. Currently, the engine on the stand has roughly 8-1 compression. 76 & prroblem solved. D x . Apr 7, 2008 · Can anyone tell me the max lift on a stock DOVE-C head with the appropriate valve springs? I have read on this site that you should stay under . 025 off the heads. Jan 21, 2024 · In high flowing intake ports with the port opening positioned down close to the head gasket surface, the air often breaks away from the port floor and results in turbulence. ratio using new pistons. 420" is the max! Jan 19, 2007 · hi matt, not to quite sure about max lift with stock pistons, but valve springs it is . That was pushing the max lift you could get and I remember feeling bad about not putting aftermarket springs in because the extra lift and wilder cam profile made it valve float at 5500 rpm as opposed to the factory cam which floated at 6200. 540/. been running the set up for a year with out a problem! make 741hp rear wheels. Shouldn't have any piston to valve problems with under . All have an improved "Cobra Jet" intake port which is capable of peak flow in the 410 cfm range. 518 lift. That's where we are at now. 1-Piece 2. 600 lift but maybe not if the heads & block are decked,if using high comp/high domed pistons,and a long duartion large overlap high perf cam so keep that in mind too. Spring Cups, 10 degree retainers & locks, 7/16" studs & guide plates. 740 lift roller with these heads 2 seasons ago and it ran real well. 5 roller rockers. 190/ Stock, S/S Exhaust Valves- 1. " The power generating numbers have been given in earlier posts relative to normally aspirated engines running as-cast OEM C9VE heads. Lift is one thing but duration and overlap plays a big part on valve clearence. 050 . 450-. I generally don't like giving cam recommendations on the H. Aug 23, 2020 · Since your orginal opening was about Max Valve lift and you listed a 68 460, those heads will go . 700 lift, the CJ can beat it by 13 cfm, but it still beats the D0VE heads at that lift. The Vortec heads, as they come with the large valveguide seals, are only capable of accepting a camshaft with a maximum valve lift of 0. 238. 850(1 13/16) and subtract your coil bind height with shim of 1. May 9, 2006 · 335 Series- 5. Notching doesn't work with C-Heads because the valves have no side cant. 539 ex lift with 1. I am building a big block 454 and have a few questions about the valve train. 271 and you get the Max lift you can run with a spring. and 204/216 @ 0. Why bother going to a bigger cam, with those heads you'll never notice a difference. BBF Head Heirarchy from best to worst 1. I saw the Summit Vortec heads (part# SUM-151124) show a max lift of . May 12, 2006 · Big Block V8 - 385 Series (6. I would imagine the pistons are probably 20 in the hole and I will be using standard head gaskets. Mar 24, 2014 · I am contemplating a head upgrade on my 350ci motor. 410" lift with 1. 705" I. Newer profiles also tend to have more aggressive ramp rates and lift numbers, to get a little more area under the curve for a given duration. Feb 13, 2008 · Randy answered about the D3s: "Unmachined D3's with production length valves and stock retainers will allow about . Stock 906 heads with the 2. I am running one of UDHarolds cams with . Aug 20, 2004 · The 460 block and the heads have not been decked, the pistons are KB hyper with 2. 700 lift for circle track, I wonder with low enough comp on stock 302 what the max valve lift you can go . i noticed that the humps in the exhaust ports are huge and they look quite restrictive. 500". Trick Flow PowerPort 290 cylinder heads are designed for high performance Ford 429/460 street and street/strip applications, providing significant horsepower and torque gains over similar-style cylinder heads. Anyway, I did have a valve clipping issue during overlap. 050 clearance on you spring. Hope that helps, Dave Jul 26, 2006 · Big Block V8 - 385 Series (6. 5/460) - Max lift - Hey guy's does anyone know what a stock D3VE Valve Spring will start to bind up at meaning lift, or what will they take as far as lift from an after market camshaft,. That is significantly higher than stock (which most sources say is . 500 lift, I have heard of caams with over . Because this head was originally designed as a production piece, the stock Vortec’s max valve lift potential is definitely limited. 540 before the retainers hit the guides. Oct 3, 2011 · By the time the cam hits its stride the stock exhaust ports will kill higher rpm HP. * stock heads (dove-a) withcomp cams 926 valve springs (good to . Jan 27, 2021 · In stock form these heads flow 160 on the intakes and 125 out the exh. 00 pair kaase-p51 special built guide plates $45. 600 lift cam with the DOVE-Cs. Dec 25, 2007 · Help me to understand why a D0VE-C cylinder head that flow, lets say 350 cfm at max lift can only support 700 horsepower while I personally know a small block fords wearing cnc ported victor jr heads that flow 329 cfm and make over 700 horsepower. 060 = 0. 19's. Sep 25, 2006 · For a high torque application they are a very good choice. It worked out very well. 200 lift went up to . 050" safety margin, and using the minimum clearance for each head, max safe valve lift on the two heads would be . 530" lift before seal to retainer contact unless the guides are topped or the spring installed height is increased. Trick Flow GenX® Cylinder Heads, GM LT1, 195cc Intake, Chromoly Retainers, Max Lift . 425 valve lift) or Summit K1103 Cam (Duration 272/282, Lift . Mike is right on this, your max lift with those heads is in the 450 - 460 range. 470" lift) on a set of stock Vortec heads. The heads can handle more lift than that but you would need to set up the springs/valve lengths accordingly. The heads being used are ported d3ve with a set of . They have a longer outside row of studs. Once you begin to go past the . 500 inch lift). Jan 1, 2004 · On the flow bench the iron heads were good for 241 cfm at . 460"-. 0/302, 5. The engine is going into a daily driver and not a race Mar 6, 2009 · New Edelbrock Performer RPM 429/460 Cylinder Heads. 800 lift $2695. Jan 21, 2011 · Those heads are Edelbrock Performer RPM heads for 429/460. 60s using a solid flat tappet cam and Port-O-Sonic intake. 011 to much lift. 460" lift, you have to make sure your valve springs do not go into coil bind and that spring parts are not hitting each other. 0725-inch maximum recommended lift and max rpm of 6,500-6,700. I know stock D0VE-C heads can make well over 500HP. 540 lift. 552 lift. First, the stock bottom end on a 460 can take 800 hp! so don't worry about that. 300 looking it over the push rod was hitting the rocker at the fulcrum and pushing the push rod to the side of the cup I suspect causing the increase in lift . Dec 5, 2016 · Designed for 1968-87 429/460 Fords, these new Performer RPM heads are ideal for high-performance street, drag racing and marine applications. 1/370, 7. 550" lift max, assuming you have the proper valve train components to go with said Jul 12, 2017 · FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - How much lift with stock rockers? - How high a lift can you go with stock non-adjustable rockers? Local guy swears you can go to . and the dooer head flow up to ~370 int. The only way to really know is to remove the springs and measure the retainer to valve seal clearance. 500" O. 321(1. 503 total lift. Better place to ask these questions, 460ford. I was thinking that it was . Jul 2, 2008 · For a first post, this is kind of a generic question, but something I need to know, what kind of lift can be safely had with pretty much stock heads? The engine I'm running is out of a '75 town car. a howards #720141-12 may work well, but the best I've run in a near stock engine is an engle Nov 22, 2007 · Hello everyone. 520" lift before they hit the retainers. 442/. 470 inches. 8/351W) - Max valve lift for a 302 - I have seen some Rv cams with over . I did some checking on mine and found that I had only about . 520. 550 lift. 460" of lift before they bind. 650" valve lift and well ported heads, (without totally ruining the exceptional mid lift flows), will flow better up to just past . At 9. Click to expand Not sure where you came up with the 0. 750" Max Lift Fits All OEM Bolt Pattern Manifolds, Uses Full Size Spark Plug AGF-22 Uses Felpro Gasket 1018 or 1028 Head Bolts Take 65 Ft. I thought they were around . 545" max Allowing for . 550 no problem. over stock. actually, you can also use a dial indicator and open the valve to measure the max lift it can Serious horsepower for your Big Block Ford engine, heads sold individually and are fully assembled. Oct 4, 2018 · You won't do that with these SR-71 heads. 720 on the gauge and had my friend put a . 5-1 compression. Can I use it with a good set of valve springs? thank you very much Oct 3, 2011 · By the time the cam hits its stride the stock exhaust ports will kill higher rpm HP. 800 lift, and you'll spend a good chunk to get it there. The motor is a 466 with slightly ported DOOE-R heads. 250 it went up again to . 470" total between the stock positive valve seals and the retainer. I am using valve springs set up at 125# seat and 330 open pressure. AFR 300 Bullitt Heads. 5:1 rockers and about 0. and . 65:1 rockers. 454 max lift and the other set for a CC 262XE with (I think) . 2-1. Then I wouldn't go over . HFD Jun 12, 2007 · Manganese Bronze Valve Guides, Dual Valve Springs Rated at . 800″ lift. I did the reverse small chamber heads and reverse dome pistons. 120" I. and finally, is there a reliable correlation between PSI reading on a compression test to CR. 586". Even with the Doves the C/R is marginal for that cam. It runs great but has no Sep 5, 2016 · On hydraulic roller applications, you’ll get PAC Racing PN 1940 1. While either of these would work well & probably be a cheaper option for you,you will be PAC Racing Spring 1. Lift Intake Exhaust . Blue Thunder has long been known as a leading manufacturer of high performance cylinder heads for 460 Ford high performance and racing engines. 647, and run the procomp high rise manifold (pc3220). 10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, custom traction bars, 4" lift, 35" mud tires Aug 31, 2016 · Intake Duration at 050 inch Lift: 221 Exhaust Duration at 050 inch Lift: 225 Duration at 050 inch Lift: 221 int. 1. More than likely yours have been machined in the spring seat and valve guide for more lift, otherwise it would have been catastrophic failure long before now. I wonder if Feb 8, 2012 · If the guy is building a drag car and has spent big bucks on the shortblock as you say, then perhaps you don't mean "as-cast OEM heads" but actually mean "max effort C9VE heads. As you can see from our data, maximum flow was obtained at . A set of Patriot aluminum heads is $795--some people will moan about the imported stuff being junk, but I've used Patriots and Pro Comps, and for the Aug 28, 2017 · 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - Good cam choice for 460 - I just replaced my old 4180 carb with a new one on my 85 F350 dually with a 460 engine in it. I understand their limitations in terms of valve lift in stock configuration. 5 rockers. Standard big block Chevy exhaust flange bolt pattern. If maximum flow is reached at . Advertised Intake Duration: 275 Advertised Exhaust Duration: 279 Advertised Duration: 275 int. 540 lift with factory rockers though. 050) = . There have been some Jul 27, 2008 · I run the early A429 heads. 625 the same as the SCJ, P-51,A-429, TFS Street, & Blue Thunder. 050. I think in general most of the stock springs will take up to appox. 460 lift. 19 1. The bottom end is a bone stock 87 460. Oct 10, 2004 · Hey everyone, quick question. What is the installed height, outside diameter, and lb pressure installed on a 1978 stock 460????? and anyone know what kind of lift I can acheive without spring bind??? Re: Max lift for 462 Camel Hump Heads 11-28-05 07:33 AM - Post# 824747 In response to slimlynn1 you REALLY should measure to be sure!as the springs coil bind,or retainers or v-guides may be slightly differant than average or they may even have been changed at some point, after all those heads are not exactly new and you or the previous owner may have changed things, but generally about a . The closest one on the web site is the H-260 which is 256/268 adv. Unmachined D3's with production length valves and stock retainers will allow about . 600 lift according to tech) *stock rocker arms (might change out) and stock positive stop studs * comp cams 268h with . The flow should rise very quickly. 270" from stock for increased airflow. Cut the block to . Jan 7, 2015 · max lift on stock head without machining. about how Intake valves are titanium. My Builder selected the M-6250-A443 camshaft and it has . The intakes wouldn't swap since they were 2. 900-inch lift. Don WCRE/Ace Rod Shop Jan 26, 2004 · On the other hand why don't you step down a cam grind or 2? Check out this crate engine. 460) will I have to do this mod to the vortec heads? :willy: Is this something that an average Oct 11, 2007 · May God's Grace Bless You '78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, cold air induction, dual 3" exhaust/Magnaflow mufflers, 100HP progressive dry direct-port NOS, A/C, Lentech Strip Terminator wide-ratio AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4. motor until I finish school. I have been porting a set of doves to increase the compression, and have installed 2. Its a 75cc chamber, but if they were worked on they may be 80cc's now. My heads are some 64cc iron 492s fully ported by Mondello Porting services and are very nice indeed, I have some beehive springs that I'd like to use as I have them already, same goes for some 1. And you would still want to look closely for any rocker to stud binding (if using stock rockers). 460 at the valve that is. The Bullitt 300 cc heads are AFR’s largest and best flowing BBF heads. I swapped the exhaust valves out of my iron heads. IF an exhaust header bolt hole breaks through to the exhaust port, don't worry about it. 05) cam with . ported iron, the TFSs beat the ported iron stuff to . Requires an A460 specific intake manifold and custom-built header. 469 max lift which I guess is why they didn't need and retainer to Guide clearancing. complete cylinder heads for flat tappet cam $2595. 050" does that sound right ? Thanks Mark Sep 8, 2002 · Also, any cam reccomendations for a mild 302 setup? This is just a temp. 520 max lift. The Racers Edge Performance - Trickflow GenX Cylinder Heads offers new performance cylinder heads at cheap discount wholesale prices. 429/460-Ford Performer RPM Heads Designed for 1968-87 429/460 Fords, these new Performer RPM heads are ideal for high-performance street, drag racing and marine applications. 460" lift with 1. 00 Dec 19, 2009 · A set of stock Vortec heads will make far more power than what came on a 400, or damn near any stock production head. As for VALVE LIFT meaning it's automatically a larger area camshaft it's absurd. Trick Flow cylinder head recommended components. These heads are fully assembled to work with a solid lifter. Max flow rates are on the order of 325 to 330 intake and 200+ exhaust. 451 lift & 202/207 @ . Exhaust port is raised 1. 5/460) - Porting D3VE A2A Heads - Hey guys, im putting together a 73 429 to drop in a truck and am contemplating doing a light port job on the heads. Jan 31, 2015 · I'm starting off with a claimer 880 short block with 11. run a ford m-6250-a514 cm w/max lift of . Head gasket: Fel Pro # 1018 Intake gasket: Fel Pro # 1230 Exhaust gasket: Fel Pro # 1420 Head bolts/studs: ARP # 155-3603 ( 12pt. Engine Pro 5X , Jun 26, 2009 SHARE POST #4 Jun 17, 2011 · The as cast SCJ heads will flow less air at . 500 lift max. 550" unless they have the exhaust bump in them. 661 at 9. 19" int, 1. 15. 460" exhaust lift whilst using the unmodified vortec heads! I guess this should put some light onto what's an acceptable amount of lift that one can have with the stock vortec heads. 467/. Question: Are the springs in the Edelbrock heads ok for the Crane #344342 cam you figured out for me ? They have a max lift of 0. Thread starter 69 GTX; Start date Jan 7, 2015; max safe lift at the valve would be . 490" at the valve with factory rockers. 480 is the max lift you can squeze by without having to machine em down. 2. 021-. 480 Feb 18, 2005 · Small Block V8 (221, 260, 289, 5. With the P-51 head, some of the intake ports will be smooth and quiet all the way to . 65:1 rockers add about 4 degrees of duration. I'd call a dealer that can hook you up with a custom cam to suit your needs. That's the same size as the SCJ's. 516 ex. New they are about $600, but you need a Vortec style manifold to do it right. It's running a cam with 0. 481". 44 bore. 480 but my friend recently purchased a cam from a local performance shop and they said the stock springs are good to Apr 24, 2005 · What is the max lift i can run safely on a stock 302 motor? 1. 520 Mar 29, 2014 · Auggie, I just got done building a Eddy RPM headed 472 and I done the same thing, I set up the spring on my height tool on the bench, I put the spring and retainer into it and went to . I am leaning toward Vortec heads. 510 in. bolts ); ARP # 155-4203 ( studs w/12pt. Using stock rocker shaft (for now). Large 2. Heads have adjustable rocker pedestals and some kind of dual valve springs with unknown aftermarket cam, and rail rockers. Scott Jan 27, 2005 · Actually I don't even see the grind on the Crane web site, but the cam card specs it as a 260/272 adv. 509" max Head #2: . Jun 26, 2009 · When raising the lift on the 429-460 heads they sometimes run out of room and the retainers will smack the top of the valve guide !! >>>>. 460 is the max valve lift for stock Vortec heads. Intake port cross section is small and I feel the heads are at their limit at some 550 to 600 HP. 460" lift is about max for the stock valve springs but they would be pretty tired by now. Feb 1, 2017 · The LT1(#12551705) cams,however,are pretty plentiful used & can be bought really cheap. Also what do you think of these possible rules. *compression is 9. Aug 14, 2009 · Those heads are the worst flowing head GM ever made. 700-inch and . Jul 14, 2007 · I can finally afford to do the C9VE heads that have been sitting ported and waiting. 600 in. 745 Stainless Steel Swirl Polished Valves. 00 arp pro series rocker studs for p-51 cylinder heads $65. 44 bore, what max size valves, and what max valve lift you can use on a 4. This allows the valve to stay open for the maximum amount of time where the lift needs to be, making sure the cam lasts longer than 50,000 miles. Apr 13, 2021 · Stock heads are notoriously poor on exhaust side flow, and a big reason for why newer aftermarket cam profiles typically have 10 or so more exhaust duration. 445 lift in fact. 420. Sep 5, 2013 · I think you are hung up on trick flow stating the supplied springs on those heads are good up to . Exhaust Valve Lift with Factory Rocker Arm Ratio: 0. 500 in. C&C C-441 Hemi 2. 050 with . Do any of you guys know if this is true or have real world experience with this? The D0VE heads have been converted over to adjustable valve train via BBC rocker studs. 2ish tires, hooker super comps, 3" exhaust, An original Torker on it currently. and 220 ex. 470 maximum valve lift). 485" on head #2. I was told that just over . This may be more cam than you want to run though. The biggest issue in my opinion is the maximum lift these heads can handle when stock. Reading many 305 builds lately and the max they used in 305s is about 470 -480 but that was with aftermarket aluminum heads equal/greater than 230 at max lift. 494 lift *weiand stealth intake *holley 770 street avenger *headers Dec 28, 2004 · I've heard that using the stock type rail rockers, the ones that came on the 68-72 429 and 460, can only handle like 0. 975 • Flow 460 Int 325 Exhaust @ 800 Lift We have heads assembled and ready to ship Apr 19, 2012 · Maximum Valve Lifts With Stock Heads Courtesy of Randy Malik Unmachined D3's with production length valves and stock retainers will allow about . Stock Vortec heads are limited to 0. 600 TFS-30410010 - TREperformance. 76 valves. They are capable of 500+ hp at 6500 rpm (+30 hp more than ported factory heads) and 525+ ft/lbs. 450-inch lift. 25" intakes and 1. Serious horsepower for your Big Block Ford engine, heads sold individually and are fully assembled. 150 zero lash and had . d. 500 inch lift. B. D x 1. motor will never be over 5500, also is the stock valves safe at this rpm , the heads are like new , only 22000 miles on the them Oct 8, 2004 · Here’s what happened when I ran a Competition Cams Comp Magnum 270H (. Apr 4, 2010 · It was the smoothest idling engine I've ever built. Jan 6, 2007 · Dont forget that max lift also has a very important componant to that mix which is piston to valve clearance. 655 at 9. Jun 8, 2017 · I'm a bit wet behind the ears too but have learned a few things. 484" lift and 206/212 @ . 800-inch of lift measuring in at 437 cfm, then tapered off at . Take your installed height of 1. It starts up great now even after sitting for a week at a time. What is the largest hydraulic Aug 6, 2009 · For example the first Pro Stock wedge head back in the early/mid 80's was the A-460, then we had B-460 heads, and by the mid 90's we had the C-460 head, then D-460 and the current NHRA legal Pro Stock head for Ford is the E-460 head. Wouldn't be too shy to run as low as . For example: Lets take a head that flows a maximum of 300CFM. Nov 3, 2014 · Head #1: . The plans for this is: -mild port work on the heads -1. Interestingly these 125 cfm Exh numbers produced by these 302 cid are the same as what the non hi-po late model 460 cid heads flow so it's no wonder why motor homes with these motors can't get out of there own way, lol! Feb 12, 2017 · SCJ heads, lunati voodoo rockersI started to play with push rod length started at 9. 750-inch of lift, but for testing purposes we decided to go up to . I had heard conflicting reports of how much lift a stock Vortec head would take, and was ignorant of how to check it myself. Mar 23, 2011 · The #16 have a stock spring installed height of 1. These heads with this cam, and headers should unleash the Horse Power, Right? May 29, 2019 · When the cam lobe begins lifting the valve, if the valve springs coil bind before the valve reaches max lift you will break cam caps or cylinder head castings. D Feb 15, 2013 · A seller has these numbers listed for a set of Pro-comp 460 heads. 0 Mar 31, 2016 · I run a 460 in my dually a 515/525 lift DOVE heads ported 4. 700 lift springs so this problem never occurred before. 5cc valve relief flat tops, nominal head gasget. Feb 18, 2009 · Im helping a guy build a motor for the local street stock class. Mar 13, 2009 · So many things determine valve-to-piston clearance issues, such as the pistons, the heads, cam lift, cam duration, lobe separation angle, valve head diameter, etc. Oct 16, 2007 · It has Dove A block and Dove heads. There is info there on how to install C-heads on a 4. 205/207 @ . My 545 has the notorious Pro Comp CNC heads with . They are available with springs for hydraulic roller or solid roller applications. Did run a dual plane and a Torker II. 005 deck and maybe . 19 or 2. PAC Racing Spring 1. 535" min / . 00 pair complete cylinder heads for hydraulic roller with bee hive springs $2695. Stock OEM valve sizes are 2. 450 lift on a 108 lsa which would give you a little better low and mid range in my opinion. Stock Buick 350 heads don't flow past . The 1. right now i have comp magnum 1. /225 exh. I bought 1 over at 3rdgen,org for $35 shipped. Yes a CJ can flow 400 cfm, but at . At . Lb Torque, Exhaust Bolt Pattern Ford not Chevy ASSEMBLED HEADS INCLUDE; S/S Intake Valves- 2. 450/. 271 + . Intake Valve Lift with Factory Rocker Arm Ratio: 0. 582). Highlights include an extremely efficient chamber design for more complete combustion and exhaust ports raised . With the small bore of the 305 you'll run out of flow early. 560" lift, by using the single springs recommended for the 280H cam. Find "The Mad Porter". 210 ex. C&C B-441 Hemi 3. We stock cylinder heads from World • Pac #1258 Springs Max Lift . You only dig deeper into the cylinder wall with increased lift. Jul 18, 2008 · I'd deck the block and the heads. Jul 27, 2011 · what will the stock c9 springs handle ? im looking at a cam with 500-500 lift, its a 1200-5500 rpm cam. . 6 FMS rockers - mild porting of the stock intake -whatever cam works with the stock valve springs Thanks. 0056" removal from the deck surface per cc. I believe duration was 219/227. In a 1984 460 with D3VE heads, the OEM stamped steel rocker arm valve train can handle perhaps 0. 245/1. 460 Those 882 heads are just a 76CC stock truck head that were never built to use in performance applications ands they have no harden seats either. Dec 9, 2005 · Looks like . 460 single, max lift 0. I also had a nice set of double valve springs suitable for the cam I was running. That was very impressive and it was also 8 or 9 years ago when I lived in Tulsa. Nov 27, 2011 · I am building a budget motor. 560 Nov 3, 2018 · Copied post 611ci sr-71 heads So long post worth the read! Charlie Evans Presley Rae Wilkerson, and Jon Kaase dyno tested my intake manifold today against an Afr,Victor, and a Mafia. 560" lift cam (1. Jun 16, 2005 · Max lift with stock heads Pontiac - Street. because of all the conflicting opinions, but you might consider the Comp 34-235-4 for a mild engine. valve lift of 0. Better to buy C8, C9, DO (’68-’71) heads or keep the stock heads and buy flat top pistons? B) The cam that I have was originally bought for an engine that would cruise at 2600 rpm minimum. if i were to do a gasket match Oct 16, 2012 · Hi anyone know what is the maximum cam lift for a stock chevy 350 cylinder head? My 350 is from a camaro 76. 710" maximum lift, - 260* max recommended duration, Max RPM 7200-7400 AFR #8000 10° Steel Retainers 1. Jan 19, 2006 · The amount of cam your engine can take is more determined by the duration of the cam than the lift, and for the most part most cams will clear the stock pistons just fine, most people notch their pistons to accomodate larger than stock valve sizes, what year is the engine and what cam are you looking at installing, no matter what people say will clear you should check for ptv clearance anyways. Also going to step up to 9:1 comp. But I was wondering what the folks here think? For what I want to do I probably only want to go to about . Will the rail rockers be OK? Note that max rpm w/ jet drive is around 4600 rpm, with rev limiter set at 5200. I got a roller cam with . Big Block Ford 429-460 Cylinder Heads with CNC ported intake & exhaust runners. 010" is what will fit. About . 063 heads may in fact be able to handle . @50 and . 456" for head #1 , and . For that kind of compression, I am a strong supported of the bigger and stronger 18 bolt heads such as the TFS A-460, the FRPP C-460, or the Pro-Filer and Thor heads. The lower the lift at which that number is reached, the better the port design. 6067 is not listed as a CJ style head however so standard type 460 pistons are used. This is a nice street combo with low compression engines. 6:1 rockers which puts the max valve lift to . Sep 28, 2011 · 5) Stock D3VE heads, which is possibly what this engine has, can only use cams with max lift of around . 6/400, 351 Cleveland - Max lift with stock valve springs? - Hi I'm just wondering what the max lift is that you can use with the stock valve springs. 0. 487/. 00 pair complete cylinder heads for roller cam with up to . Charlie Evans Gary Blair wrote: The Edelbrock deck is . May 4, 2003 · FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - Stock heads. 271 = . , with . 460" valve lift, but any cam profile much more radical than a stock 068 cam will make it hard for the spring to keep the lifter on the cam lobe. Mar 28, 2009 · i have a set of procomp fully port cnc heads (pc3058c) on my 545 stroker and love them. 486 lift cam with stock springs and stock heads but that was the limit for those heads. 6 rocker) but I swapped to vortec heads Nov 25, 2002 · I was witness to qtrmiler with stock D0VE-C heads with stock valves and stock valve job(not 3 angle) and 100% unported ran 10. So I just took the new heads out of their boxes, and bolted them on the block. 600 lift comp springs, retainers and Mar 25, 2006 · I ran a . 710/ Stock Jan 24, 2009 · Big Block V8 - 385 Series (6. 040 head gasket. Feb 6, 2008 · A429 Aluminum Motorsports Cobra Jet heads INTK Lift- stock/ Ported----- EXH Lift- stock/ Ported A-429's as delivered were 322/191 max. 0/429, 7. 76 exh. 060 feeler gauge inbetween the coils and it was snug but they could be used because he was not going to turn it over 6500 rpm, I told him I would use them if it was me Mar 6, 2001 · While trying to select a cam for my rebuild I have run across a ? - what's the max lift the stock ford valve train can handle and will I be close to hitting the pistons -it's a 91 model and i'm looking at a cam with 208/216 dur. Can gm 882 heads handle the lift? and will i need new pushrods? thanks in advance for your advice Jun 23, 2010 · From the info i've found on the site about these heads the dove heads flow up to ~350 int. 550-inches OD hydraulic roller dual valve spring with 175 pounds on seat, 0. com Jan 4, 2024 · Years ago I ran a set of C9VE heads with a Crane CCH-304 Commander kit which had nearly identical lift specs,I had the guides cut for positive seals and the spring seats cut for the springs and we checked the guide height for retainer clearance for that lift but don't remember if we had to cut them down, I would check to make sure, it could make a good day shitty. So 1. Alaska442. 900-inch. 98 intake port. 425- to maybe 0. I would like to install a 218/228 (at 0. qopey sdkz chbfj ypbnw waf dmst pdali rnmeql jiqmxl gbmkn