They were good, for a mini mouse....lots of rpm and lots of noise, decent handling. That's about it. Stock performance:

Handling was razor-sharp, aided by power steering that was both quick and had road feel. Four-barrel 1969 Chevrolet Camaro Z28s could run the quarter mile in 14.8 seconds at 101 mph, but the small-block's shortage of low-end torque was multiplied with the dual-quads, which fed on sky-high revs. Even dropping the clutch at 4000 rpm produced stumble off the line.

Not exactly blistering performance in stock trim.... I had a 67 Firebird, 400 with a 4 speed. It ran 14.30's stock..... The 302 was a lot more hype then anything else, and history has only made the stories go faster..... The Z-28's and the Boss 302's were sold to the public so they would be a legal car for SCCA Trans Am racing, there real home.... Big block cars, then, as now, ruled Super Stock drag racing....