Your thoughts on this motor I got for my truck

[originalJD]

Originally Posted by Captainfab

With those flat tops and the ~64cc chambers of those heads you should be around 9.5 to 9.7-1 depending on deck height and gasket thickness. Have you determined if they are cast, hypers, or forged? Is the block a 2 bolt or 4 bolt. Sorry for all the questions, just curious

Hey I don't mind the questions. They actually get me thinking. Like the pistons. I never thought to figure out what they are. I do know that the block is a 4 bolt main. Also I'm fairly certain the deck height is standard. The suffix code is still there and doesn't appear to have been re stamped. Heads seem to be standard too. As for gaskets, I'm thinking of a set of Mr Gasket with copper head gaskets. Thin.

After a closer look today while doing some clean up. I found that something was banging around in the #5 cylinder. Looked like maybe a screw from the indentions on the head. Most likely the main reason for the last rebuild. All signs indicate it was prior to the rebuild. No damage to valves, piston or cylinder wall.