“ Added performance pieces gave the Chevelle improved performance , yet it was mild enough for work-time traffic . Buyers could choose from two versions of the 375-horse engine . The primary difference was that the L89 included aluminum heads , shaving about 100 pounds from the weight of the vehicle .”
the January 1970 federal requirement by about four months .
All Super Sports were powered by Chevrolet ’ s big-block . The base 325-horse engine , RPO L35 , provided more than adequate performance along with the ability to be ordered with air conditioning . For those wanting more performance , the 350-horsepower version was available as RPO L34 . Added performance pieces gave the Chevelle improved performance , yet it was mild enough for work-time traffic . Buyers could choose from two versions of the 375-horse engine . The primary difference was that the L89 included aluminum heads , shaving about 100 pounds from the weight of the vehicle . While not on the official option list , a 425 horsepower , 427 cubic-inch powerhouse was available but dealers were required to place the order via the Central Office Production Order ( COPO ).
The base transmission was a three-speed manual . Additionally , three versions of the Muncie fourspeed were available . The wideratio M20 provided the best package for the street . The close-ratio M21 kept the engine closer to its torque curve , and the close-ratio M22 was the ultimate if serious drag racing was the owner ’ s goal . Chevrolet ’ s two-speed Powerglide
“ Added performance pieces gave the Chevelle improved performance , yet it was mild enough for work-time traffic . Buyers could choose from two versions of the 375-horse engine . The primary difference was that the L89 included aluminum heads , shaving about 100 pounds from the weight of the vehicle .”
was canceled for 1969 and replaced with the stout three-speed Turbo HydraMatic trans .
Considering the long list of available performance and comfort options , the Super Sport catered to the masses , whether they wanted simple , low-cost performance or high-end luxury combined with performance . By the end of the model year over 86,000 were sold , making the Super Sport a bona-fide success for Chevrolet .
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