![]() You could still get a solid lifter motor in small block form or big block form but were only 9.00 to 1 compression.Įd did I go overboard? I used to look at engine specs all the time to see why Chevy got their power differences in these engines. I said usually because there were a couple big blocks with 12.5 to 1 compression and in 1971 and after all compression ratios dropped. The duration is far larger than the stock cam yet it is sane. This larger cam will be less prone to pinging with less low rpm cyl pressure. ![]() The solid lifter camshafts usually had 11.00 to 1 compression to run for max performance. Remember, the 396/350 had 'rated' CR of 10.25:1. The question marks are not exact but close to what they are. When your talking solid lifter camshafts there were more variations in those than the hydraulics.īig Blocks only had 2 different hydraulic camshafts back then. ![]() Small blocks with more power with more than 350 hp had close to 11.00 to 1 compression and solid lifers. I am pretty sure they only had 3 hydraulic camshaft that were primarily installed in those years above in the small blocks.Ģ83- up to 220hp. This is one of the best 'all-around' hydraulic cam grinds, for the 350' SB platform, to come out of G.M. ![]() G.M only used a few different camshafts from 1964-1972 in 283-400's. ![]()
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