12.35/111 mph with a 3600 lbs car and 3.91 gears. The '74 short block actually wasn't completely stock, since we home honed and reringed it after purchasing from the junk yard, but that's all we did. Heads were the open chambers that came from the factory (with different castings on both sides), pocket ported and with stock valves, milled .040" Cam was a MP 280/.474" hydraulic, intake a Torker2, 3310 holley, factory distributor with advance spring tweaking, 2" primary headers and 3" dualpipes. The true CR was 8.6:1. We tried M1 intake, MP 292 cam, roller rockers etc, but the engine didn't really respond. Anyway, it worked well without spending a fortune.