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Doesn't the low compression 440 pistons in a 400 bring it up to 10.1? You may have to cut valve reliefs but.....


you cant put 440 pistons in 400, 440 has 4.32 bore 400 has 4.34 bore and 440 has 6.76 long rod for raised block 400 is low deck with monster bore


MOPAR OR NO CAR