damn only 3500. I dump mine at 6k and it falls on it's face. I needa to do 4.10's for sure. These 3.73's are killing me. thanks for the info.

 

Very nice! Need my car to run those times!

 

if thats the case it sounds like it may be more than the 3.73's that are killing you. What are you making for power?

 

I'm really not sure. Never been on the dyno with this tune. i guess 550/640 for a guess. If there's not enough timing down low, that can kill it as well. But i have a new tune/pulley combo in the works. So that is all in the past now. I have 4.10's sitting here just in case. Either way, good to see another t56 swap truck doing work. It's the funnest mod ever.

 

Custom pulley or off the shelf? I have run a Saleen pulley on mine (with a spacer), but I am looking for a better 3" pulley.