Page 58 - Expereience_Magazine_2021_Fall_Barrett-Jackson

THE MIGHTY After having unseated Pontiac’s GTO as America’s best-
selling performance car in 1969, Chevrolet’s Chevelle SS
continued its reign for 1970 with handsomely updated
LS6 THIS CHEVELLE available only with top-of-the-line Malibu trim level and
styling and a move upmarket. Now, all SS models were

in hardtop, convertible and El Camino body styles. While
SHOWCASES THE
the hugely popular RPO (Regular Production Option) Z25
MUSCLE CAR ERA
SS396 option returned, the big news for 1970 was Chevy’s
LOT #750 -1970 CHEVROLET CHEVELLE LS6 – NO RESERVE new RPO Z15 SS454 package, thanks to a change in GM
corporate policy finally busting the 400-cube ceiling for its
mid-size cars. Offered in two levels of tune, the new 454
was available in high-torque, 360-horsepower LS5 tune
– perfect for street performance, while a relatively small
number of savvy performance addicts and racers demanded
the RPO LS6 mill.

Underrated by some estimates by as much as 50 horses, the
454-cube LS6 was advertised with 450 bhp and 500 ft/lbs
of torque, purpose-built with all the right stuff to dominate
the street and strip. Based on a stout 4-bolt main cylinder
block with heavy-duty forged internals, the LS6 featured
11.25:1 compression, free-flowing “big valve” cylinder
heads, a radical solid-lifter cam and booming dual exhaust

- - -
THE CAR RETAINS ITS RARE ORIGINAL DATE-CODED SMOG SYSTEM,
PLUS THE ORIGINAL INTAKE MANIFOLD, DISTRIBUTOR, HEADS AND
780 CFM HOLLEY 4150 CARBURETOR.

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