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Budget 390 FE Engine Build Cylinder Wall Thickness

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Because we're going to 0.040 inch oversize, JGM wants to be sure our block sports proper cylinder-wall thickness. Although we've seen our share of FE big-blocks (except 427) go to 0.060 inch oversize, iron can sometimes get thin in places. Peart sonic-checks all eight cylinders--top, middle, and bottom primarily on the thrust side. The thinnest we found was 0.162 inch, or shy of 1/4 inch thick.
Budget FE Power! - Part 1 in a Two-Part Series

 Because we're going to 0.040 inch oversize, JGM wants to be sure our block sports proper cylinder-wall thickness. Although we've seen our share of FE big-blocks (except 427) go to 0.060 inch oversize, iron can sometimes get thin in places. Peart sonic-checks all eight cylinders--top, middle, and bottom primarily on the thrust side. The thinnest we found was 0.162 inch, or shy of 1/4 inch thick.  View Related Article

 

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