Ok, I know about the belt slip issue but I have a 4# lower on already and a 2.80 given to me. So I want to install the 2.80 upper.

I know RPM and LFP sell the upper pulley puller/install tool. But I'm trying to avoid spending $80+.

Can the swap be done for less and still reliable (ie not screwing up the blower)? Is there tools I can rent from Autozone to make work?

And will the 67.5 belt work or will I need to go shorter?

 

You DEF need a puller to get the Pulley off (you can put it on without one)
I think I've heard people say yes you can rent one at Auto Zone
(if not someone rents them ???)
And yes the stock Belt will work just fine

I had 3 puller tools but I think I got rid of them all, I'll look around...

 

the amazon racing puller is the best out there if you can find one... they have quit selling them but it has been copyed as always...

 

Thanks for the input guys! And Rob, if you aren't going to be pulling any Eaton Pullies in the future I could give the puller a new home!! Haha..

 

I happen to have a VERY NICE Ported Eaton with a 2.7 JLP Pulley on it ; o )
So you never know when I'll need a puller. If you still had no luck I'll look around I think I still have a JLP Puller Tool. I didnt get to look today (just got my stang back, got 4.10's installed) Had to take it for a niiiiiiiice ride

If you need I'll look for it and if your interested I'll "LOAN" it to you as long as you return it.

 

Are you going to retune once you put on the upper? Im sure it needs it...

 

I use a steeda puller, As for the retune, I run my 2.8 upper in hot weather and remove it in the cold. I had my dyno tune done in the early spring at 65 degrees @ 12 # of boost. In the heat I seem to get around 8-9 # with out the 2.8 upper. This year I went with a quick change upper so it will be easyer to detune for the winter. The maf can make the adjustments so this works for me.



Just my 2 cents.



Ported and polished eaton
single blade throttle body
c&l ported and polished upper plenum
2.8 upper pully and idler relocate

428 rw
501 torque
predator tune

 

I will If I datalog and see I need improvement from my current setup.



Silversvt04, I assume you are running a 4# lower with that?

I have some of the same mods..

Apten ported Eaton
4# lower
SBTB
C&L Plenum
90mm MAF
Volant intake
Dynatech Longtubes
Afco HE with interchiller fans
Xcal I tuned by PSP
Running Denso IT22's

 

No, I still have the stock lower, Just the upper is changed, this is a sea level truck in Canada, so cool thick air. Hot air here is about 80-90 degrees.
....but I wonder about the numbers a little bit..Dyna jet...

with that set up i saw 12 # boost at 73 degrees, with the smaller upper.

Up here not to many big lower pullies, 4# is about the largest, not to often a6#.