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Re: 396 Cam change for 1971
For 1972, compression was down to 8.5:1 and net horsepower had fallen from 242 down to 210, so a significant drop. SAE net torque on the big block was still 320, but that's less than half what comes in the new Z06 :-)
Still not sure on head changes, but I think there was a chamber change.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
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