Currently I'm running a 3.4 press on pulley and I'm seeing a max of 9* of knock. I tried using Torco and that barely helps, brings it down to around 7*. It's only a blip of 9* when shifting, but it doesn't want to go below 5* until I let off the gas. If I pulley up to say a 3.5 or 3.6 should I see a good decrease in knock and actually gain some hp back? I like hearing the scream of a 3.4, but obviously power is what I'm after and I just don't like to see that knock decrease my timing to below 10*. Please help me with some advice of what I should do. Mods are in my sig. Thanks Gents