Alright guys, I'm looking to get a little more power out of my ss/sc. I currently have and injen cold air intake full gmpp exhaust and the gm stage 2 kit. What I'm thinking is getting the car dyno tuned and putting a 2.9 pulley, but I'm unsure on whether to put the oversized tensioner from zzp or if I should buy the adjustable tensioner. So if anyone could help me out with the decision I'd grately appreciate it.

 

Well if your wanting to get a more noticeable difference in power just go ahead and get the 2.8in pulley and the oversized tensioner pulley since it serves the same purpose as the adjustiable one just A LOT cheaper lol

 

Ok and the oversized tensioner will fit the stage 2 belt I have on the car already? And I also heard that the 2.9 pulley is the safest one to go with? With the 2.8 ill have to get a heat exchanger correct?

 

Well depending on weather you could get away with the 2.8in for awhile if you didn't want to get the h/e immediately, but it would be best to grab a h/e if you go under a 2.9in pulley Yes. The stage 2 belt and oversized tensioner would be very difficult to get on. I know that even with the 2.8in pulley on mine and just the oversized tensioner pulley it was a pita so if you have the stage 2 belt you probably dont need to worry about the oversized tensioner until you go below the 2.8 I would say.

 

I plan on getting the zzp h/e within the year anyway and the option b they sell. So I believe I'll be safe with that if I didn't rump on it every minute I got into the car lol. But just to be safe should I get the oversized tensioner? I'm having a guy that has worked on mustang cobras and a few cobalts and he's also the owner of the shop. He's an awesome guy that I've heard from, with a dyno jet that will be tuning the car so I have no worries that way.

 

And also will the 2.8 pulley work good with the 42# injectors??

 

Nope to be safe u need 60s or 50s

 

Like I said before if you already have the stage 2 belt you shouldn't need the oversized tensioner

 

Vibrant header and downpipe kit...

 

I alway loved how the while vibrant setup sounded (RFL)

 

This.

 

I have all the cooling mods you can get, and the car still pulls timing on GM stage 3's 3 inch pulley if I am not running at least 93 octane. In other words, you should NOT get pulleys that small unless you have a much less agressive tune than GM Stage 3, are always running something to decrease knock, have an exhaust ported head, or you don't care.

 

Agreed!

A smaller pulley is not "always" the answer to more power.

 

Ok cool I appreciate everyone's input and advice. Now I'm thinking about the 2.9 pulley with 60# injectors and buy the bad mab headers with all the cooling mods they make and obviously get the car tuned. Will that be efficient enough and safest to get more power out of my car? I'm not looking to go all crazy with it and build the car, I wanna get the most power out the car with just bolt ons because I do drive it everyday and I need the reliability.

 

I got the badmab header with the ZZP 3" down pipe with a high flow cat and a 2.5" exit. The car sounds great and can definitely feel more power. I would recommend it to anyone thinking about doing exhaust mods. With that said, next thing for me is going to be cooling mods galore lol.

 

This will be a good start to making some nice power.

 

Yes with a nice safe tune even I don't see why you couldn't hit the 240-250hp mark, if you were wondering about what kind of power output

 

Ok cool and yea I was thinking with all the mods would be around 270 wheel but if it isn't that than I can live with that lol. Just out of curiosity what would give me 270ish

 

270whp is not that easy young grasshopper

245-250whp will be more realistic with your proposed setup.

270whp would be obtained with the use of higher octane (meth, E85, race gas), an aggressive tune, full exhaust, cooling, and some other odds & ends.

 

2.8 and full bolt ons and cooling mods with 93 gas will prolly get u 270 with a good tune.

 

Key point in your sentence.

 

Lol well I'm taking it to guy that's tuned cobras and ford lightnings and has done a few cobalts so I'm not afraid of having a bad tune and it'll all be done on a dyno jet so I can see the full numbers the car puts out. And I'm running on 93 all the time anyway so it's not that big of deal for that and even if I wanted to go e85 there isn't a pump around me for 30 miles and I'm not going to drive that every week lol

 

And that's what I've seen on the 2012 official dyno thread that guys with my stage 2 are pushing 240s and with 2.8 pulleys is around 260s-270s so I just didn't know how I couldn't get that with the 2.8 and cooling mods with injectors.

 

I have full set-up with a 2.9 and 3.0 pulleys that I switch out during different times of the year because florida gets too hot and I have heat exchanger and dual pass with option b just to give you more food for thought.

 

Don't look at the pulley size as the main difference in the power....

Most of the guys in the 270whp range are running meth or an aggressive tune.

There are people with a 2.8 pulley, full bolt on's, and tune only in the 250whp range as well.

Just keep that in mind....

A 250whp SS/SC is still a quick car. If you are really interested in shooting for 270whp as your goal, look into a 2.7 pulley, 60# injectors, full exhaust, cooling, tune, and some sort of octane. 93 octane is good, but will only get you so far.