GM lifted the ban on movement in middle cars, Oldsmobile, Pontiac, Buick and responded with 455-cid mills with up to 370 hp. The muscle cars of the 1970s reach the peaked, and continued by the begaining model 1970 Chevrolet Chevelle SS 454 in the rise. Retort was a Chevy 454-cid V-8, which began in 360 hp and 450 ended in barbaric. It was the time of summiting of the muscle car.

As the SS 396, which cost $ 446 and came with a 350-bhp 402-cid V-8, front power discs, F41 suspension, F70x14s Polyglas, and a hooded top. Fat dorsal stripes were optional but weare included with the new cowl induction hood $ 147, which had a pick near the base of the windshield, which opened at full steam to feed air to the engine. Chevelle that again presented as a Super Sport option package for hardtops and convertibles.

There was the LS6. This was the take-no-prisoners 454 with a Holley 800-cfm four-cylinder in an aluminum manifold, 11.25:1 compression, forged aluminum pistons, four-bolt chain, solid lift, forged steel crankshaft and connecting rods, and deep-groove accessory pulley. The new SS 454 package costs $ 503 and includes a 360-bhp 454 hydraulic lifter called LS5.