What are the engine codes for a Chevelle LS6?
What are the engine codes for a Chevelle LS6? International 1970 Chevelle LS6 Registry LS6 Engine Codes / Casting Dates Engine Engine Engine Transmission Notes Code Size-Carb HP-RPO CRR 454-4 450-LS6 TH-400 CRS (1) 454-4 450-LS6 (w/L89) TH-400 Aluminum Heads CRV 454-4 450-LS6 Manual M22 What was the horsepower of a 1970 Chevy Chevelle? The LS6 454 V8 was the most powerful production engine offered in any of the American Muscle Cars of that era. The 454 LS6 V8 was conservatively rated by Chevrolet. The advertised horsepower rating was 450 @ 5,600. However, the engine actually was closer to 500...