Chevrolet 454 LS5 and LS6 V8 Engines 1970 Chevrolet 454 LS6 engine

Chevrolet 454 LS5 and LS6 V8 Engines
1970 Chevrolet 454 LS6 engine
Michael Barera/Wikipedia

Powering one of the most iconic muscle cars in history — the Chevrolet Chevelle SS — the 1970 Chevrolet 454 LS5 and LS6 engines produced an astonishing 500 lb-ft of torque. While the first Chevrolet Chevelle model launched in 1964, it reached its zenith in 1970 with the Chevrolet Chevelle SS 454. 1970 saw GM lift its self-imposed displacement ban on engines with over 400 cubic inches in mid-sized cars, leading to sudden introduction of big-block engines in all the company's popular brands, from Chevrolet to Buick, Oldsmobile, and Pontiac. Chevrolet decided to enlarge its 427 cubic inch engine to 454 cubic inches (7.4-liter V8).

The basic model, featuring the LS5 engine, produced 360 horsepower and 500 lb-ft of torque at 3,200 rpm. Only 4,298 units of the Chevelle SS 454 LS5 were ever made. The RPO (regular production option) Z15 SS option with the LS6 engine, coupled with a Holley four-barrel carburetor and a cowl induction hood, delivered 450 horsepower with the same 500 lb-ft of torque at 3,600 rpm. It's said to be the highest factory horsepower rating of the time. Only 4,475 LS6 Chevelle SS cars were ever produced.

Read More: https://www.slashgear.com/1596072/cl...ons-of-torque/