In the 1970 Chevrolet introduced the RPO-Z15 SS454 option - available in your choice of LS5 or LS6 power. The new SS 454 package included a 360-bhp hydraulic-lifter 454 called the LS5. Top of the line was the LS6, it was a take-no-prisoners 454, with a 800-cfm Holley four-barrel on an aluminum manifold, 11.25:1 compression, solid lifters, four-bolt mains, forged steel crank and connecting rods, forged aluminum pistons, and deep-groove accessory pullies for a staggering 450hp.

Cold Air Induction was another popular means to achieving increased horsepower and the 1970 Chevelle SS sported a cowl induction hood. The ZL2 option made use of a unique flapper door that opened at full throttle, feeding cold air to the 454’s 800-cfm Holley carburetor mounted on an aluminum low-rise intake manifold. Locking the domed hood in place was the job of a pair of functional hood pins, standard on the cowl induction hood.

The quarter mile could be reached in 13.7 seconds. It was that hi-po 454 that made the Chevelle SS the stuff of legend.

With the Chevelle SS 454 LS6 came a strikingly bold redesign of the Chevelle’s exterior. Featuring new fender bulges giving the Chevelle its well defined muscular figure. In addition, several unique design cues from revised front & rear bumpers to dual, individually recessed headlights separated by the Chevelle’s brand new v-shaped front grille differentiated this Chevelle from the rest of its lineage.

For the SS models, the all-new grille treatment was blacked out, partitioned by a body-color bar with a center mounted SS logo. A unique black rubber pad fastened between the newly designed rectangular taillights featured a white pinstripe and SS logo. The interior came in for a revamp too, it featured bench seat & column shifter as standard equipment, optional Strato bucket seats and an optional console with a floor-mounted shifter. An SS emblazoned steering wheel and SS dash with optional gauge package including a 6500rpm tach could be found on the 1970 Chevelle SS.

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