I have a 272 and a 292 that I could put in my 55 but I am leaning towards using the 272 since its a 55 to 57 block and would be correct according to the casting numbers,what I need to know is can the 272 block be safely cut to accept standard 292 pistons. Both motors I have will most likely need to be bored to clean up the cylinders and I could probably find a set of standard 272 pistons cheaper and have a original block which is really no big deal but since I have it it would be nice to use.

Butchering up everything I can get my hands on in Dayton Ohio