gtxrt
Well-Known Member
doe's anyone know the piston compression height on a 1971 383 hp motor. thanks.
I took apart a standard bore 71 383 hp a few years ago. It was around 60 to 70 in the hole. With steel head gaskets and 906 heads, it came out around 8.2 to 1doe's anyone know the piston compression height on a 1971 383 hp motor. thanks.
OK, cool. The motor I put back together still ran strong, just needed a bit more stall speed since low compression makes a 383 a little soft on the bottom end.got a hold of a stock 71 383 hp piston, came out to 1.865 compression height. .055-.065 in the hole on a stock motor comes out right.