[weq92f]

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Speak to a few cam manufacturers tech help. They are likely to put your mind at ease. But do go ahead and place modeling clay on a piston and a head on your block with OUT a head gasket, install light test springs, lifters, push rods, rockers on a cylinder and roll her over a few times to get a good measurement.

I retrofitted a roller setup into a 396/402 and can tell you with certainty you do not want to use COMP CAMS roller lifters. I wasted 450 dollars of my money to be able to tell you this absolutely. Those COMP lifters are POS Junk. I have since pulled them out and replaced them with about 500 dollars worth of Howards 91161 retrofit lifters. I've only put 50 miles on these so far but they have already quieted down far, far more than the COMPs did over about 2000 miles ( yes...adjustments made no difference ).

My little 402 specs... dome pistons @ 9:1 with #063 heads stock valves:
CAM: comp 11-422-8 ( 270/276 dur, .510/.510 lift, 110 sep )
long tube headers
mild stall

RPM 1600-5400

She's a ripper!

-klb