You may be able to get a orque gain due to higher flow, but thats not going to be that great. You will be able to shave up to .050 off your heads safely and gain the compression back on your heads. Due to the size factor(318) dont look for Gobs of torque. your not going to find it. Lean towards HP, and youll get it. If you want a lot of Low end, get more cubes.