The 1970 Chevelle LS6 Was Supposed to Crush This Buick — Instead, the ‘Grandpa Car’ Swept the Drag Strip by Jack Harmon A 450-horsepower Chevelle LS6 and a 360-horsepower Buick GS Stage 1 met on the same strip under strict factory-stock rules, and the car with less horsepower and more weight swept every round. Here’s the torque math nobody on paper saw coming.
