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5.3 iron block bored out to 3.903 with new cam bearings, and plugs, ready for a 5.7 LS1 rotating assembly. Machined by Extreme Machine and Performance in Georgetown. Has valley cover, truck oil pan, windage, and pick-up tube.

tags: ls1, ls2, ls3, lq4, lq9, l92, ly6, lm7, ly5, chevy, pontiac, corvette, camaro, firebird, ss, gm, gto, turbo.

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