Ace-Garageguy Posted June 23, 2015 Posted June 23, 2015 (edited) Yes, a 4-71 is appropriate for a LOT of street engines, over a long time. Build styles may come and go, but a blown engine is a joy forever. And Greg...do you happen to know anything about those alloy Olds heads in your last shot? Last time I looked for real aluminum 1st-gen Olds OHV V8 (303-394) heads, I came up dry. Edited June 23, 2015 by Ace-Garageguy
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