I recently purchased A remanufactured 1988 351 Windsor engine and after I disassembled it on the top of each piston .040 was stamped and I am wondering if that means it was punched out 40 over I am looking to put a stroker kit In it and was wondering if I need to bore out anymore its going into a 67 Mustang and I wanted to produce 400 plus horsepower if anyone can help I would really appreciate it thank you
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