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That piston has a 2.060" compression height for a 440 RB block. In a 400 'B' block it will be 0.128" above the deck. I don't know if the piston can be milled that much, and you would still need valve pockets. Also, the top ring is going to be very close to the top of the deck.



I think the ring would be ok, if you use an open chamber head which typically are .100 deep.. You'd need to chamfer the edges of the piston & cut maybe .030 off the dome..

On the other hand thats a good 440 piston & if you decide you can't use it I'd be interested..