11-30-2008, 09:50 PM
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CC Member
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Join Date: Jan 2005
Location: Hillsboro,
OR
Cobra Make, Engine: Scratch built CSX style frame, Carbon fiber body, 393 Stroker, T-bird IRS, T5
Posts: 1,623
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Not Ranked
Sounds very close to my build and here is the recipe I will use:
Vic Jr. Heads- 210 cc runners 1.6 Comp Pro Magnum roller rockers, 58 CC combustion chambers. The Vic Jr heads come with excellent springs good for up to .650 lift. The AFR's have had a reputation of coming with lousy springs which would need to be replaced to handle the cam you are discussing.
Weiand Stealth intake with Holley 4150 750 DP carb.
Comp Cams XE 292 cam or the XE 284 Cam.
Keith black dished pistons. Check his site for a calculator for the appropriate dish, but you should end up needing about 20CC of dish to accomplish 10.5 to 1 compression
My cam is a flat tappet, but this grind is also available in a roller version
If you are going to use the stock 302/351 roller lifters, you'll need to do a slight amount of grinding for the dogbones to set flat on the lifter bore tops and you'll need to drill and tap 2, 1/4-20 holes in the valley for the dog bone spider to mount. Be careful with these holes as they land right over the cam bearings. This will save you enough money to take care of some of your other ideas, IMHO.
The RPM is a close copy of the cast iron OEM intake and will limit your flows and your power range. For low end power I would opt for a dual plane intake like the Weiand Stealth or Edelbrock Air Gap. For higher end power, look at the Vic Jr Intake, which is a single plane unit.
The guy I got the cam and other parts from for my engine had this combo in his 408 and he reported that it got 515 hp at the flywheel.
Good luck with the project.
Bob
Last edited by Three Peaks; 12-01-2008 at 07:30 AM..
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