340, 360LA or 360 Magnum?
Vehicle weight 3,175lbs. Track size 1/4 - 3/8th 12 degree bank asphalt. Compression 9:5-1. Max RPM 6,800. 10 slicks. Stock crank. Stock magnum heads with heavier springs. Springs must have stock O.D. I have a stock 596 rebuilt LA head. Can use roller rockers. Must use a flat tappet hydrolic cam. Intake edelbrock 2176 or mopar 4876335 no modifications or porting. 4412 holley carb metering block 5924/5925 or 10570 with 1 spacer. No modifications except jets, power valve, and remove chock parts and filling of choke hole. Stock Block max overbore 0.040 double roller chain allowed. Headers 1 3/4 x 3 1/2 collector. If I was to go into an additional racing class, its the same as above only adjustable rockers, intake 2176 only, and header 1 5/8 x 3 collector. Does that make a big difference in power loss with that combination? Could really use the help, thanks in advance for all the input.
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