Well I was exploring cobalt-addiction.com and noticed they have a 2.79" replacement pulley for the GM stage 2 hub. Now it says it will work with the Stage 2 Reflash and everything, but i'm wondering if it will be fine on the 42lbs injectors?

 

It would prob be better to go w/ the 2.9" Pulley b/c most people are seeing a high duty cycle on the 42lbers w/ a 2.8

 

Ya I was thinking that, because when I get stage two, I want to get a new pulley to put on after I get the reflash. Tahnks

 

I would say only going to a stage 3 pulley (3.06") comfortably. 2.9" would be cool, but I would say you need engine monitoring to make sure everything is in check. Under that, and you need a tune IMHO

 

^ I agree 100% I would not go smaller then a Stage III GM pulley on the GM stage II reflash. Just IMO though. And you won't really see much of a gain on that small of a pulley change.

 

I need to correct myself, the stage 3 pulley is more like 2.99" not 3.06, but you get my drift.