Btw i took this from a 302 motor builder who races nastalgia classes and stock race classes
In my experience the actual compression ratio on most of the "original" 302s was lucky to be 10 to 1, although they were rated at 11.0. I usually had to deck the the block to legal specs, and mill a bunch from the heads to get them to min (again legal) ccs, and the 11 to 1 comp ratio. In my opinion its just hard to get comp in small engines.
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2000 SS Procharger
98 Z vert turbo
07 TB SS cai catback and tune
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