What Is the Most Horsepower You Can Get on a 1970 Chevelle SS 454?


Quick Answer

The most powerful stock 1970 Chevrolet Chevelle SS Z15 produced 450 horsepower with the optional LS6 engine. This is 90 horsepower more than the stock Turbo-Jet 454 engine used in the Z15 trim.

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Full Answer

The LS6 engine option in the 1970 Chevelle SS Z15 was the most powerful stock engine ever offered in a 1970s Chevelle model, producing 500 foot-pounds of peak torque. Many Chevrolet fans believe that the official performance numbers for the LS6 are lower than the engine's true output figures. A Chevelle with an LS6 can accelerate from 0 to 60 miles per hour in slightly over 6 seconds.

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