2.85 pully with 42's ok to run and will I need cooling mods, or can I get away with it?

 

i ran a 2.85 fine on my car, people will tell you its not good but i now run a 2.8 on 42's and a stage 2 tunes and im still running fine.. have had it on for a good 7k miles

 

God we need a sticky for this subject. IDC's will be through the roof and your power above 6000rpm will be limited compared to 60lb injectors and 2.85"

 

oh ok so what do you guys recommend?

 

With 42's? 2.9"

 

k thanks

 

get 60's if your serious

 

If it was MY car i wouldn't even consider a 2.9" without 60's. Most i would go with 42's would be a 3"

 

k, also do you recommend any good sites to get this stuff?

 

new era performance sells flow matched 60's for 240 shipped

yeah gm's weird like that they push the envelope on everything. stg2 is close to and in some cases over 100% idc's but its ok cause its warrantied right lol

 

Not true. I am running a 2.85/42.5 lb and I don't see IDC over 90% @ 7000 rpm. Now I am also 3500' SL.

cheers

 

NOOOO
get 60s, the 42s youll top out in no time with a 2.8 or lower

it happened to me

 

yeah elevation helps you out to but you probably see 14~15 psi as people down here would see closer to 18 right

 

k and cooling mods aren't necessary with 2.8?

 

no, but they do help

 

it would only help you

 

alright sounds good, thanks

 

I am pushing 16 - 17 psi @ 7000 rpm, IPW +/-15 ms = +/- 87.5 % IDC

I have also installed a Cobra H/E to help with cooling.

 

no prob
but do run 60s if you get a 2.8

 

Look around the site for a little bit and do some research before you make a decision. Theres some good info on this if you dig around through all the crap. Try to decide what you want from the car and your potential goals. A potential place to start:

tuning
60's
2.7-2.8 in pulley
poly mounts
full exhaust
intake
meth/heat exchanger

Dont overlook traction and cooling mods. Too many people just want to buy more and more power adders, when they cant put the power they are making currently to the ground. If your are going to go the route above, cooling mods will also be a must.

 

A good site for the pulley would be www.smoothflowpulleys.com/Stage2.html !

Nate

 

Way to represent Nate!

 

IDC's over 90% can lead to a sticking injector which is really bad. Your best off just getting the 60's.

 

yes! you CAN but back to back pulls and you will be in big trouble and even on a single pass you idc will be around 120-140