I bought the short block assembled, it was brand new, pistons have not been out.
There are witness marks on 4 or 5 pistons. Machine shops is going through the heads, checking valves and springs.

Engine is apart now and as soon as I can get pistons picked out, going to call PRH for a roller. There will be clay going on the new pistons.

How many guys have put TF heads on 440 Source kits? Has anyone else seen a mismatch in the pistons like mine are?