I went stroker small block. 418 ci, Eddy CNC'd heads, Air Gap intake, pump gas, tight 10" converter, 3.91 gear. Best of 11.26 at 119 with plenty more left in it. It's a beast in the low end torque department. Dyno'd at 485 hp at the rear wheels. Pop the hood and it looks like a stock 340 to the layman. It's the sleeper I've always wanted. Good luck with whatever decision you make.

Just my