The 300 series was dropped after 1969, but early in 1970 the carryover Malibu was joined by another low-priced model simply labeled “Chevelle.” Familiar quad headlights made one final appearance that year.
The Z25 package was offered in 1970 only for top-shelf custom El Caminos and Malibus, meaning no more SS 396 post-sedans, and the SS 396 name remained the same in 1970 even after the 396 big-block was bored out to 402 cubic inches. New for 1970 was RPO Z15, the SS 454 package. The “base” Z15 engine was the 360-horsepower, 454-cid LS5 big block. Optional for 1970 only was the awesome 450-horse LS6 454.
A small-block V-8 returned to Super Sport Chevelle ranks in 1971, and the name was simplified to “SS” for both the 350- and 402-powered models. Revered SS 454 fender badges stuck around up through 1972. Only one option code, the Z15, was listed in 1971 and 1972 regardless of the engine chosen, small block or big.