New crate motor woes

I had to take my 360 crate short block apart to machine deeper valve pockets in the pistons. I found machining metal in between the rings and two different weights of wrist pins. I called MP and after many phone calls finally got some guy at Cummins Recon where they are machined and assembled. Told him what I found and that I was looking for at least two wrist pins of the correct thickness and weight.

He sent me an entire set of pistons and rods, with rod bearings for no charge.

I still had to clean everything and check all the clearances. I know it seems wrong to buy a crate engine and have to disassemble it and check and clean everything but, they aren't hand assembled one off race engines either. So for the money I'll disassemble and reassemble it to my liking.

Just a thought. Hope you get yours straightened out. Unfortunately I don't remember who I talked to or what his position was.

Just thinking, you could possibly have an intake leaking under the valley. What type of intake do you have? The factory Magnum barrell intake is notorius for leaking where the plenum pan is bolted to the bottom of the intake causing excessive oil consumption. You could also be sucking oil through a pcv valve in an unbaffled rocker cover.