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I plan on building a 429/460 this spring and summer for a 78 F-250 4x4 SuperCab with 4.10 gears and Im looking for suggestions. I want a decent motor to be used in an every day truck that will be used for hauling and towing and not racing. It needs to be reliable and able to run on 89 octane gas. Heres what I have to work with: D1VE and D9VE blocks with cranks, 429 and 460 cranks, all stock rods for both 429 and 460's, C8VE and D3VE heads, one Eddlebrock Performer intake and a 650? cfm Eddlebrock carb and a 750? Holley carb. I plan on going with a Procomp Extreme 4x4 cam and whichever heads I go with will be ported.
These are the parts I have right now and Im looking for a little direction. So far I was thinking of using a D1VE block .030 over with matching 460 crank, recondition the rods, C8VE heads ported and reconditioned, Eddlebrock intake, Procomp Extreme 4x4 cam, the Eddlebrock carb, a Pre-'71 timing set and L&L headers. If this is a good combo what pistons should I run? Am I missing anything?
Almost forgot, what torque converter would I need or would a stock one be ok?
Thanks for your suggestions.
converter depends on the cam... what are the duration @.050 specs? lsa? or part number so i can look the specs up.
as for the rebuild kit id go FEM-MHP178-211 from summitracing.com and the d3ve heads... youll be good on pump gas, since its a .020 overbore youd still be able to bore it again to .030, .040, or .060 later if something goes wrong, and hypereutectic pistons run good tight clearances so your rings will last longer. the only problem with them is they cant take any detonation. if youre running any more compression than that kit would give you then go forged pistons.
Here are the two cams I was looking at. Comp Cam #X4262H AND X4270H.
Does a combustion chamber burn more or less efficient with dished pistons or does it make a difference if they are dome, flat or dished?
reason i picked that kit is its .020 over with hyper pistons... if you used the c8ve heads youd have to go a big dish and the kit is more money because youd have to go forged. also the c8ve heads dont flow any better than the d3ve heads... if you were leaving the bottom end stock then the stock 22cc dish pistons would leave you with about the same compression with the c8ve assuming the rings were still good. when i looked up those cam numbers i came up with several different grinds, summit #CCA-34-235-4 is the one id go with from comp cams, but youll have to get the kit with springs and retainers because the stock springs wont take that much lift. also as long as youre in there id swap in a nice double roller timing chain straight up. the c8ve heads are leaded gas, the d3ve heads can run unleaded, but either will work fine if you get new valves and seats put in. dome pistons are the least efficient, flat tops are best, and dishes are in between... it depends on the compression much more though... and you use piston design to compensate for head changes
Last edited by darrin1999; Mar 9, 2007 at 12:37 PM.
Yeah thats the cam I was thinking of. I plan on gettin the whole Compcam kit, cam, lifters, timing etc. Good point on the C8 heads being leaded. I suppose it would cost more to get those reworked than it would to do the D3's. Any idea what kind of torque numbers this combo would produce?
well... if you do headers and good free-flowing exhaust, and a mild exhaust port on the d3s, with the performer intake and edelbrock carb, and that cam with timing straight up you should be around 530 ft-lbs and 375-400 horse
if you want to do the porting yourself just go to www.reincarnation-automotive.com and pay the 25 dollar membership fee- much cheaper than paying someone else to port them, and you can use the site as much as you need... i think they also have porting instructions for your c8ve's, but i know the d3ve instructions are the best youll find
Last edited by darrin1999; Mar 9, 2007 at 10:27 PM.
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