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Muscle1970 Chevelle SS 454 LS6: 450 Horsepower Explained
450 horsepower in a family-sized coupe.
Chevrolet's Chevelle SS 454 in 1970 is often named as the high point of the muscle car race. With the top LS6 engine it was rated at 450 horsepower, a number few road cars of any era could match.
Why the 1970 Chevelle SS 454 reached 450 hp
General Motors lifted its long-standing cap on engine size in mid-size cars for 1970, so Chevrolet could finally fit a 454 cubic inch big-block. The LS5 version made 360 horsepower. The LS6 added higher compression, a solid-lifter camshaft and a bigger carburetor for 450 horsepower and around 500 lb-ft of torque.
A short peak for Chevelle muscle
Insurance premiums and new emissions rules were closing in, and output ratings fell in the following years, which gives 1970 a special place. Rare LS6 cars bring top prices, and cowl-induction hoods and build-tag decoding are worth studying before any purchase.
1970 Chevrolet Chevelle SS 454 key facts
- Engine
- 454 LS6 V8
- Output
- 450 horsepower
- Model year
- 1970