The LSA also received a stronger forged steel crankshaft to deal with the reciprocating forces compared to the LS3's cast iron crank. To really hammer strength and keep internal temperatures low ...

Carrying Chevrolet part number 19432060, the tall-deck cast iron big-block V8 features 4.60-inch diameter cylinders and a 4.75-inch forged-steel crankshaft ... the popular LS3 crate engine with ...