Quote:
Originally Posted by 71CHEVYSHORTBED402
Makes sense.
Once upon a time, I thought I heard the 396 heads had larger ports and therefore more compression. If I recall, it was 10:1 Vs 8.5/1. The heads on my rebuild came off a 396. Note: I don't know a lot about engines. I just did the R and R, with my buddy who led.
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Port size doesn't effect compression ratio, that is determined by chamber volume as far as the heads are concerned. But anyhow the 396 -402 trucks are among the coolest IMHO.