on a street car you don't want to run any higher than 10:1 comp. and they need to be forged. most people make nitrous application pistons
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06 GT custom mandral bent exhaust, borla mufflers, o/r x-pipe, SCT2, tuned by Wes@TPS, CAI, 4:10 gears, ZEX 150hp wet shot, 03chrome cobra wheels/ 11.76E/T at 115MPH & its my wife's car  1970
Chevelle SS 454 big block Old School 500hp
Chevelle
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