That still doesn't answer my question.................I want to know..........how do you do a stage 1 with a 2.8 pulley...............what is involved??? i.e stage 1 with such and such pulley with such and such tensioner etc.............and what is the cost and what are the reprocutions of doing this vs. just getting the stage 2 and being a happy customer with warrenty on the car?????????????????????????? I will go out and buy stage 2 tomorrow if this is a better choice but I have seen a few threads about stage 1 with a pulley and I am interested and so is the dealer/all the guys working there!!!!! They would love to do a stage install with a smaller pulley but I don't know what to do at this point with ony a few dyno's and very few who say that they have installed a stage 1 with a 2.8 pulley. If stage 1 with a 2.8 pulley will give more than a stage 2 then that seems to be the way to go. If not, I'll just do stage 2..................help me out brothers!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

Ok!!! I'm going on a trip to Cancun for a week..........end of April............If I don't hear a resonable response with a reason as to why I shouldn't do stage 2 over a stage 1 with a 2.8.........................then I'll just get the stage two when I get back...............D.U.N. done!!!!

 

That's true as well. All of them though you have to grind I belive except for the Billet Flow one....idk correct me if i'm wrong. Because if it's a 3 inch idler, than you have to grind it. But I belive the Billet Flow one is like 2.75

 

I bought Stage 2. 1 of the reasons was the smaller belt. A lot of people are running Stage 1 with a South Florida Pulley HQ DUB (Dial UR Boost) setup where the pulley rings are interchangable or Billetflow. The GM Stage 2 kit comes with something simliar to the SFPH DUB System which has a 4 bolt pattern and is interchangable. But I got the idea of purchasing just a 2.8" pulley ring from SFPH and using it with the GM hub. Well this did not work. The HUB on the GM kit is too large to fit inside of the 2.8" ring and the bolt pattern is a little off and the size of the holes were different. The GM pulley ring had larger holes. So the only difference your getting OUT OF THE BOX from Stage 1 to Stage 2 is a smaller belt and a modular (interchangable) pulley system with a 3.0" pulley. You have more to choose from if you were to buy a pulley system from SFPH or Billetflow because you will be able to drop down to a 2.8" or 2.7" where as for now the GM pulley system is capable of the same thing but there are no other pulley rings u can purchase and not even sure if it may be an option. It seems like it because of the modular system being used. But who knows! Stage 2 get's me to about 15psi a 2.8" pulley would put us at about 16-17psi which supposedly for every lbs of boost is about 10hp. So if that's the case u may get an extra 10hp using the 2.8" instead of a 3.0"

And to let everyone know as far as GAS MILEAGE.. I drove from Buffalo to Syracuse and back (w/ Stage 2) and my DIC said I was getting 31mpg. Was doing 80mph the whole way. City driving is 26mpg. before Stage 2 I was at 25mpg. and hwy about 30mpg. but when I get on the gas I watch those numbers fall and they fall almost instantly

 

Would a stage 1 and a 2.9 pulley be faster than a stage 2, since they supposably have the same reflase and the 2.9 pulley is smaller? Does that sound right. Correct me is im wrong.

 

Smaller pulley will give more hp. The diff between a 3.00" and a 2.90" pulley would be minimal difference. Maybe an extra lbs of boost. "They say" for every lbs of boost is about 10hp.

 

Thats wat i figured but hey 10hp is 10hp, and plus its overall cheeper than the stage 2.

 

We tested this tonight, the stage II reflash does not bleed off boost.

With my stage II and 2.8" pully i am seeing ~125kpa or ~18psi

I am using the florida pully non slip system, the tensoner picks up any slack and i have no belt slipping at all.

Hoping to go for a dyno somethime this week.

 

So after buying stage 2 if you wanted to put a 2.8" pulley on it wouldn't just be an easy job one pulley off another on? It would involve changing the hub as well? How hard? how long? and what steps would involve converting GM Stage 2 3.0" pulley to Intense 2.8" pulley? or vice versa

 

You would have to pull the gm hub off and replace it with a new one. rather easy job with a pulley puller.

 

SilverSS PM MAXPIT, he has stage 2 and a 2.8" pulley. He also had it dynoed.

 

Okay and would putting gm stage 2 with the intense 2.8" pulley slip? or would i need to get the belt tensioner?

 

I think one of the pulley vendors on this site have a pulley with a very similar, if not the same mounting as the stage 2 pulley. Do a search for it, I think someone posted it.

 

Why spend the money on a stage 2 if your going to change the pulley. just get a stage 1 and put a pulley on. save a ton of money that way, since the only diff. in between the to kits is the pulley.

 

one reason could be that NOBODY can actually garantee the 2 different reflashes. everytime someone says they are different someone contradicts them and says it isn't.

 

I went the cheeper way and got the stage 1 with a pulley. I haven't raced a stage 2 yet or seen the dyno's of the two setups yet so im not sure witch is better but i do no that my car is fast with stage 1 and a pulley.

 

Check out the redline forums. I think Sp00ner over there just dyno'd 260whp and 225 ft lbs with Stage 2 and a 2.8" pulley. The A/F ratios look to be pretty safe. That was with just an intake too. A header and exhaust would really open up his car.

 

anyone running the Stage 2 belt with the 2.8? Any slip?? this is my main question now

 

So how is it that a stage 1 with a 2.8" pulley is equivalent to a stage 2 with the 3" pulley? since basically they are the same thing just one is a smaller pullley shouldn't the stage 1 be greater since its the same kit? and will someone please give me a straight answer is it because of the reflash because i was possibly misinformed when i read the reflashes for both stages were the same?

 

i am runnin 2.8 with gm flash also ...no dyno as of yet but its getting done on sun so i will let u all kno how it goes

 

Im pritty sure gm even said themselves that the flashes were the same, the only diff. was the pulley so im sticking with the stage 1 and the pulley is greater than a stage 2.

 

jmac is running it safely right now, i gave him my sfphq 2.8 and im running his 3 inch for now... hes pushing just over 18psi....its totally safe, actually in theory more safe wit hthe stage 2 considering u have the smaller belt.

i dont see why ur all scared.... im prolly the first person to blow the supercharger, i did last week, and they warrentied it with the smaller pulley, cold air intake, among other things.

p.s. it was completely random that it blow, in no way was it the pulley, more of an issue internally with the blades and there alignment

 

does that non slip pulley just bolt on to the same blue bolts on the gm stage 2 hub. basically i'm asking is it really easy to install? did u buy the machined one or the ring one?

 

I have stage 1, the stage 2 belt, a 2.8 pulley,and an intake. 18.4PSI at 6800 rpm's. Still runs rich like 10.6.

 

What are your other mods ?