The W295 and 1438 are for the Chevy 307 or 250, with a compression height of 1.655". The photo of each shows a chamfer.
The other two are for the Chevy 283 or 230, with a compression height of 1.780".
Oh, I just searched by bore diameter. I wasn't looking at the other specs. So Summit doesn't offer anything piston-wise for 250cid owners. Anyone have an inexpensive source for replacement flat top 307 pistons?
