300 horsepower at the flywheel put your car in the high 11's? That's roughly 240 - 255 to the ground. What gear ratio and stall speed converter did you have? I've been told that it takes 300+ horsepower at the wheels to get out of the 12's. But I don't know this as a fact.
well,..depends!! 300 hp wil get a 2800 lb car in to 11s, but a 3600 lb car gonna need more hp! wallace has a calculator to figure your power to weight ratio....DWB