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We have built several LT-based engines at 4.100 inches (.100-inch oversize). 060-inch oversize for a normally aspirated application. 030-inch, we sonic- check all the cylinder bores for wall thickness. If we are going to overbore the cylinders more than. Now it is ready to be checked for any cracks. We use a method that bakes the block like cleaning an oven, and then it is shot blasted. The block must be cleaned before you begin. When starting to plan your project, try your best to get steel caps and straps, have the deck heights checked and corrected, and ensure the lifter bores are all measured (once in awhile you find one that is scuffed up). The only LT block options are whether you have two- or four-bolt main bearing caps. For this book, we built a 355-ci engine that is almost as powerful as a 383-ci version, for a lot less money. The most popular sizes are 355 to 383 ci. The smart thing to do is to build an LT-based engine that is capable of driving to the track, racing for the day, and then driving home. You can use the social sharing buttons to the left, or copy and paste the website link: But the cam journals are the same as stock, so I don't know what gives.SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. Is this a problem with Sealed power 1898M bearings? Do they run tight? I didnt get +/- because they werent spun, just worn, and I'm installing a new TSP 220r cam. We could scrape the bearing down, but with as tight as they are, I don't want to remove too much of the Babbitt material and find myself in the same position of having to replace them again before I would If they fit. I figure some of this can be due to the Crush from installing them, but. No +/-) I noticed that the journals on the new cam bearings are 10 1000ths larger than the old cam bearings.

So we mic'ed the old bearings to make sure they were the correct replacement (supposed to be direct replacement.

I'm in the process of rebuilding the engine, and we just finished cleaning up all the parts and started to put the cam bearings in so we can finish cleaning the block, and after test fitting the cam with only two bearings in, It damn near seizes in place and becomes hard to even remove, let alone turn. I drive a 2004 Chevy Avalanche base, 4x4, With the 5.3 LM7.