Originally Posted by sloveniaboy
yes, do tell.....I was always itching to do a pulley mod as well....I herd the difference is the same as when you have the A/C running and turn it off???
I would tell you bout the difference but I couldn't notice much on my 320 motor. I have the UUC underdrive pullies also. I just noticed a minor ease on getting to higher rpms. I'm sure I'll actually feel them on this years new engine when they get switched over.