[Jesse Knapp]

I don't think I'd trust the JB Weld either. Nothing against the product, I've used it many times successfully, but I wouldn't use it in a cam bore area. You can use the old chevy "60's" blocks, the newer ones, or a bowtie piece. Bowtie is the way to go, but pricey. Has to be the 4" bore for 302, 327, and 350 with the .070 allowance for superstock. You can run the natural classes or the newer gt classes depending on what body style you want to run. You can run the pre 80 cars in gt now. Example: If your car is a 68 camaro and you run the 327 engine, one of a few choices offered in 68 from Chevrolet, it has a natural class in superstock and is allowed to run a gt class if you choose to go that way. I've seen very few old camaros, or old cars period, in gt. I doubt there's much, if any, advantage there. Hope this helps.....