Ok, So I have been searching for about an hour now reading all I can on the 2.8 pulley. My current mods are in my sig. My question is this, will the GMPP extruded manifold be fine to use with a 2.8? Also I have GM stg 2, so do I need any other hubs or belts with a 2.8, I dont believe I do from what I am reading since I am stage 2. So with my current mods, I am thinking all I need is;

1. 60's
2. the harness for injectors
3. front mount he
4. option B

From what I have been reading I think this is what I need with my setup, minimum.


Thanks guys/gals

 

Looks like you have everything figured out pretty well. You can use the belt and hub you have and it will be fine to run that header, although a better header will benefit you. I would pick up a downpipe as well

 

yep i had that kinda set up. with full exhaust and intake it ran pretty good

 

what kind of whp would you be looking at with just replacing the gmpp stage 2 pulley with a 2.8??

 

your stage 2 injectors would hate you.

Smaller pulleys net more of a torque increase than hp, unless you can run more timing through an increased octane.

 

not for me...i have an 08 ss/tc... this kid i know tried telling me he will be over 300whp with a 2.8 pulley, stage 2 injectors, exhaust and intake...just trying to prove a point, anybody have an idea of what the numbers would be like?

 

Probably around 240-250whp depending on the tune. He would most likely run out of fuel in the high rpm's though

 

lmao tell your friend to sign up on here and say that. that would be an epic thread.

and to OP you have it figured out just fine. get those mods on and your 2.8 and enjoy