I got a new pulley from a company called pulley technologies. They are basically ZZperformance but have a different name currently. They have something to fix the belt tension issue although I am not sure if it is for sale or not quite yet. It is very nice watching the boost come on so fast and not have the belt slipping. I will get it back on the dyno to report some numbers for you guys soon. Pulley technology has some good prices on there stuff and have some deals where you can get a press on pulley and there remover/install tool.

 

Nice I would like to see performance and times your getting from it if possible, thanks.

 

coming up asap

 

is their a piggey back used or did they flash your computer?

 

curious, do you make more boost or is it just more boost down low?

 

what is the stock pulley size? I;ve been to different web-sites and they dont all say the same thing

 

3.5"

 

its actualy 3.35:, I swore it was 3.5" too but I was wrong.

 

I would love to see some new times and a dyno.

 

I'm guessing 5hp gain with that pulley,

 

lol prolly. I got a 3" manifold back exhaust going on starting today that will help it breathe much nicer.

 

with that pully did you have to put a piggy back on the ECU or do they have a reflash?

 

I've got the same pulley too; I'll install it friday and will post dyno results.

 

I'm not and my wideband says I am still running a bit rich. I will let you know how things progress.

 

good to hear keep us posted

 

Finally I will install mine on NEXT friday ...

 

i talked with a friend of mine that has been to magnason , and from what he said magnason isnt happy about all the pullies from the after market , i guess alot of shafts are getting bent or something on the snout is getting damaged


magnason told him the stock pulley is out on with a 2200 pound press


also the pulley coming from GM wont be a pulley , it will be a replacement snout


how much of all of that is true im not sure , but i have heard of alot of s/c's getting damaged from attempted pulley swaps

 

why doesnt everyone just be patient and wait for the GM performance engineer people to come out with these upgrades rather than risking ******* up your car and every warranty...?

 

My guys at my dealer said that the stage kits will probly voide your warnitys. but i dont know about that. well have to wait and find out

 

If you use the proper tools there is no risk of bending your shaft. In fact I know of at least 50 people now with succesful pulley swaps.

 

that's good info to know. now i will ensure i have a gatorade nearby when i swap mine out

 

No when GM comes out with a factory performance kit will will not void the warranty. I have talked to technical assistance and one of the reps from the GM performace products teams and he said the kits will not void the warranty (but he would not give me the details of the kits)!!!
Oh and he drive up in a 2006 Pontiac Soltice. Very cool car (it was a pre production car so it had some flaws). It is rear wheel drive and has the same 2.4 vvt engine that is used in the non sc cobalt ss's. I was drooling but still like my car better.

Jeff
2005 SS/SC
red/res inserts, sunroof.
3000+ miles, no problems what so ever and loving it

 

lookin for a cat back system 2006 ss s/c any suggestions??

 

The stock pulley is 3.35. I just purchased the 2.85 will post results soon.

 

Just purchased the 2.85 pulley also. Any problems?? going to install this weekend. also lookin for a cat back system. can ya help??