The final years of the Roadmaster, they all shipped with the Tuned Port Injection LT1 5.7L V8, detuned somewhat to 260bhp from the 300bhp Corvette spec.
Even so, 260bhp is 260bhp, and the torque peak came in at lower RPM, too. So when combined with the relatively skinny all-season tires, lack of a limited-slip diff, and the aggressive throttle tip-in typical of domestic sedans*, it was hard for grandma or grandpa to get away from a traffic light without accidentally chirping a tire.
*In order to make them feel "peppy", it's common to have the first bit of pedal travel open a disproportionate amount of actual throttle travel.
