Fresh rebuild, ran for a bit, pulled. I'm unsure of the hrs but the Piston skirts show 0 wear. Can even still see some shiney piston thru the plug holes.
2250
In Beachwood, NJ

Need more details. Forged or cast, what cam, what-if any-heads, comp ratio?

I honestly do not know. It's a 2 bolt main. Assuming a stock 330 cam. Like I said, it evidently was rebuilt and ran for a short period. I pulled it out, ran it, noted over 40 psi oil, pulled the pan for a leak and seen new pistons. I'll upload pics in a few.

454 330 https://imgur.com/a/sXSFM copy and paste. That should be the link to the folder.