The block will have a casting number on it, but it is hard to see because it is behind the starter.
If you can read it, you will know what the block is. It sounds like you have a 289, but it could be a 302 block with 289 heads. Hmm, for that matter, I think some folks were stroking 289s to be 302s back in the day. If that is the case, even the casting number won't really tell you what it is!
1965 5.0 Coupe /MAF/EFI/Astro A-5 T-5/B303 Roller Cam
5 Speed Specialist
Last edited by SPeace-ATL; 12-03-2010 at 08:45 PM.