Tom, Check your local machine shop. They should have a book. If you don't have any luck there, I will check with my guy this weekend. I am sure he still has one. If you are in need of new pistons, let me know. I can help you out. Nick Alfano Date: Tue, 31 May 2005 17:21:16 -0700 (PDT) From: Tom Jennings <tomj@xxxxxxx> To: mail@xxxxxxxxxxxx Subject: Re: Piston ID? Message-ID: <20050531160755.O847@localhost> On Tue, 31 May 2005, Nick ALFANO wrote: > That looks like a TRW/Speed Pro part number for a > forged piston. Not sure of the compression ratio as I > don't have a TRW or Speed Pro cross reference book > handy but if you look it up there, you should be able > to find out the exact specs. >From google, you'd never know that TRW ever made pistons! It's a TRW part, I found an x-ref to Hastings, but TRW does not list any pistons -- for any make -- on their website, and searches 'speed pro' (and permutations) turns up nothing. In fact, if I had to rely on the internet to find pistons for the AMC six, I'd be screwed. I'm going to my local parts store and I'll see if they've got a catalog.