LS3 Crate Engine - The New GMPP LS3
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The crankshaft on the LS3 is nodular iron instead of forged steel like the LS7 or LS9. The main journals are 2.56 inches and the rod journals are 2.100. All 5.3L to 6.2L LS engines use 6.067-inch connecting rods made of powdered metal. View Related Article
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