572 Block?
 

Right now I just bought a 454 block with a 4 bolt main for $375. Basically to make it a 454 I need to get the 454 rotating assembly to make it a 454, can I make a 572 with this block. My friend said I need a 502 block or something like that and I was looking and GM performance parts and I'm pretty sure they use the same block I'm using with a 572 stroker kit? Am I right or wrong if so, what block do I need in order to get the stroker kit to make a 572! Thanks!! :D

572
 

you need a 4.5 bore and a 4.5 stroke
or a 4,3 bore and a 5,0 stroke
but i guess it´s best to 502 ,merlin3,and bore it to 4,5
my 2 cents;-)

like what block exactly do i need to make a solid 572. Is my block the right one or do I need to take it back and get another one?

I thought you needed a tall deck block to go to 572 at least that is what the Chevy crate 572 are. I think pretty 496 is the biggest out of a std 454 block without stretching the limits to much.

Tonny

As far as i know 500ci up you need an aftermarket block the merlin can go to 700 something ci.