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Hey list, I got my case back from my machinist yesterday. This engine was rebuilt by myself about 6 months ago, and started up about 6 or 7 times before it locked up. I dropped it out, tore it apart, and brought it to a local builder (a different guy than I had do the machine work the first time). He told me that my crank was ground way out of specs, that the align bore was incorrect, and that the thrust surface was cut wrong. I had him do all the machine work and paid him to put the case back together (just less headache for me). Now I have my case back and am preparing to build the rest of the bottom end. My question is this: What compression ratio should I be looking for? I cc'ed the heads, measured the deck height, and found the fixed volume of the cylinder as per one of Bob Hoover's sermon's recommendation, and found my compression ratio to be approximately 8.4:1. This is a re-rebuild, so I want to get it right this time. Any recommendations? I'm not at the point of no return just yet for the installation of shims (I'm thinking of about a .060" to lower the ratio to 7.4:1.0. Thanks, Bryan 73 square, stock 1600, converted to single carb (not my doing) ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com