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Old 09-09-2007, 11:33 PM
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Need help choosing a cam!

Hi guys i need a lil help choosing a cam. my set up is a sbc 406,srp flat tops 11.6 wit 64cc AFR 220cc fully cncd. A brodix hv intake port matched 2 the heads, 850 AED,400 tranny,4.10 gears. My car weighs about 4500 lbs its a 1971 chevy caprice on 24" rims and tires. im not lookn 2 race but im tryn 2 move this heavy car as fast as i can when its time to race another car in my weight class. any suggestions on a good solid roller spec? i need 2 no what duration @ 50 is best, rpm band and a nice lobe sep.


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Old 09-09-2007, 11:39 PM
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if you are set on using a solid camshaft use a flat tappet, the valve spring pressures and oiling issues will kill a solid roller camshaft just cruising around town in no time, you might get away with it for a while if you grooved the lifter bores, comp cams sells tools to do this with, save yourself the trouble and use a flat tappet, just check your valve lash every oil change and you should be fine
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Old 09-10-2007, 06:28 AM
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call AFR and ask....because.....those 220 ports are designed more for high rpm need all the low rpm TQ (mix velocity) to accelerate the 4500 lbs you can get....

then call/email 4 cam companies and see if they concur with AFR's recommendation....

the 4.10 gears (and 420ft/lbs? from the motor) are going to help alot with (TQ) acceleration and no ping

just a comment:
you built a mid range to high rpm need a max power at low rpms cam for the 4500lbs weight....
strip even 500lbs out of the car and it will preform so much better!
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