your best bet is to build the internals(look at the GM 300+ build book), then do cams, I/H/E, smaller pulley, and most importantly, ECU tuning (big power gains there if anyone can crack it)if you not there set then consider different charger ( turbo, super, or both).

but personally I think 400WHP is a little out of hand for a daily drive car

 

Yes I agree. The car stop pushes 195wtq...about and 215 hp...can easily get it up to 300whp....I don't want something that is really....DANGEROUS for the daily drive downtown....

350whp and whtq is my goal.....400 is a bit for a FWD car...Plus I don't want to pus the PSI too much on the supercharger....maybe push about 16-18psi.

300whp-350whp goal...maybe if 400whp and tq is managable and safe....I would...but doubt it...

 

Twin screw retro fit or twin m62's

 

Ok, a few posts back a twin screw supercharger was mentioned. I tried doing a little reaserach, and and apparently there aren't any, and there won't be any any time soon.

I read an email in another topic about Kenne Bell that they are not developing one for the cobalt.

So I emailed whipple and here's their response:
"I'm sorry, but we do not offer a supercharger system for your vehicle. We do not have any development plans at this time.
Thank you for your interest"

Just thought this info would be helpful to anyone else contemplating a supercharger swap. Doesn't look like that will be an option for some time.

 

If you are going to do a supercharger swap to a twin screw, you are going to have to do a custom fit. I don't see Whipple or Kenne Belle producing a charger for the Cobalt.

 

why not? if I owned any one of those companies I would for sure make one for the cobalt. The cobalt is becoming the next hot tuning car.

 

actually i posted in this tread already but i retract from my statement of not happening. in the same magazine that i read about how impressive the stage 2 was for GM (on the grand am track they race cars at it came out on top of the RSX-S, WRX, and Srt-4) it also said the 2.0 is capable of well over 650hp....one thing i could think of tho is TURBO. supercharger would never get you there...GM is head over heals about this car this is their car thats gonna be their focus of power....trust me they will make more to get you in the 300's...just like for the 2.2 eco they have a build your own racing eco book make 800+hp if you buy everything they say...it gives you part numbers....they will do it for the SS S/C too...and #1 in that book will be...buy a turbo lol

 

So the build book is exclusively for the 2.2? I thought it had 2.0 build steps as well?

 

Anyone who said turbo needs to go buy an SRT-4. Top Fuel Drag cars use blowers and Im pretty sure they are over 400hp. With a twin screw it is very much more than possible to hit 400hp not that one would want that much power in this car as a DD but its a free world.

 

I'm trying to get info from Whipple about there S/C's, but they keep brushing me off. They went as far as to tell me that one they have listed on there website is not in production for a few more months, yet they have kits using that S/C for sale.

 

Which one is that, the 140?

 

go for intense kit
header
corsa exhaust
injen intake
port and polish blower
port and polish head
new cams
and whatever tuning is needed should get you a decent power gain since from what i see most ss/sc's are 230 hp stock at the wheels

 

The 75. I didn't want to go too big. Just enough to replace the M62 and leave some room for improvement.

The 140 is used to replace the S/C on the 03-04 Cobras! Talk about over kill.

 

lol, sorry meant the 100. The 140 would be a bit much ya think Would be fun though.

 

Yeah it would. I have found it very difficult to get info from aftermarket vendors. They don't seem to care that you want to use their product to try and improve something. Even if it could mean another sale, if not multiple sales.

I just found a 75 used on Ebay, event though they won't be out for a few more months.

 

endz, you have to get rid of that killl list. It's really gay. I like this quote from svt forums " Kill lists are for ricers"... just some constructive criticism.

 

I couldnt find 1 on ebay, only the ones for the cobra

 

You have to show that there is enough demand for them to even comtemplate doing R&D. Your guy's best bet is to start a group buy demanding gains of 80whp, for so and so price. And fax it to them with a link to this website. And I wouldn't send anything less then 25 people.

 

I was only asking them for the dimensions and mounting locations of an off-the-shelf compressor, and what it's output was. They wouldn't even give me that. I was gonna design and make the adapter/s.

 

Exactly, this is why I don't see these companies producing them. You have to put your money where your mouth is before companies will step up. This car is a great little tuner but you are going to need some serious PCM tuning to go to a twin screw which will require a lot of R&D.

 

I figured Stage 2 reflash would take care of tuning.

 

Yeah that's a PIA. They used to have detailed dimensions on their site but it looks like they pulled them. There is an old thread about the ultimate supercharger swap but it talks about the 1600AX which was the old series 1.6L.

 

ALong with some serious fortifying of the internals (top and bottom end, axles, drivetrain, rubber, and suspension.) the only thing i think can get us numbers higher than 350 WHP is twincharge and spray. I wanted 400 at first but I realized that with the weight of the car 350whp willl be pretty damn fast you wont find much else that will beat you on the street. 400+ whp will make it a track only car. but its just my opinion, do what makes you happy.

 

Yeah, but no dimensions. I was looking at that one.

 

You wouldnt need to add anything beside the twin screw if you could find a direct swap.

The benefit right now of twin screw would be less parasitic loss, less heat generated and bad ass sound. We could all run stock pulleys and pull 18psi and generate little no heat and produce alot more power