More boost Stillen SuperCharger kit
 

Currently i have
- Stillen SuperCharger Kit with 9lbs boost pulley
- 9:1 Compression Ratio Wiseco Pistons
- - built bottom end
- Level 10 upgraded 7AT Transmission (Hamburg, NJ)
- ART Test Pipes
- Stillen Headers
- CJ Motorsports v1 Fuel Pump (on its way)
- 750cc Injector Dynamics

First off talking to Stillen is tough, and talking to Vortech about superchargers and the kit that its on is pretty rough as well. Vortech was much easier but still very unwilling to help since its the Stillen kit.

What i would like to accomplish is max out the Vortech V-3 SCi supercharger that is currently on my car. What size pulley can i go to and achieve approx. 16lbs of boost? The supercharger is rated to 17lbs boost. The other question i have. Is there anyway to upgrade to a Vortech TI? I have been told that the bolt pattern is the same and should mount up but i was wondering if anyone has any experience with this type of upgrade?

Is there anyway to upgrade to a Vortech TI? Yes I did it to mine and on the 8LBS I was seeing 12 PSI. I got the upgrade done through Vortech and stillen, The impeller upgrade cost me 285$.. Just happy you have a built motor mine blew after 3 days at 457 WHP.. BTW you may want to change the MAF location or you might end up like I did . :/

Stillen is prone to failure if u try to upgrade it, also original stillen tune is a failure, do not try to upgrade it, just go AAM TT.

Did you move your MAF location? And where did you place them?

good luck getting any more power out of that kit. Listen to others, stillen is junk all around in my opinion. This is from personal experience and from friends of mine

The kit is good for what it was made for but one's you start upgrading parts of it it will definitely go wrong plus you won't take advantage of the build motor at all. So if you have the kit already sell it and buy a turbo kit.

Lots of ppl use Stillen to be California carb legal, so... I get using the Stillen setup.

upgrading the stillen kit will be getting the impeller upgraded + smaller pulley, you have the built motor so it may be good for it, others have blown their motor after doing the impeller upgrade, no one yet has done an e85 conversion with the impeller upgrade though.

9:1 compression is going to be really bad for the stillen kit, as others have said. I'd weigh up your pricing on upgrading the kit, you will already need to get larger fuel pump/injectors/impeller upgrade/different size pulley/re-tune.

No one has pushed the kit to 16/17psi, either go for it OR sell the kit and throw in some extra $$ to get a turbo kit to take advantage of your built engine.

what are your goals/ what kind of power do you want to produce? I've got no idea why guys in the US even go with the stillen kit over a turbo kit tbh, except for the CARB guys.

I was thinking about doing this same thing but was talked out of it for the same reasons stated above. You can get more power and reliability for about the same amount of money you'll have in upgrading the stillen kit. Also I'm very interested in where I should relocate the maf sensors since I still have the stillen kit with the 9lb pulley making 440rwhp and 327ftlbs of torque so I'm dangerously close to the limit already

They won't give you a carb sticker if you don't use stock cats on their dyno lol. My buddy found that out the hard way and that was the only reason why he went with their kit. Their tune blew his motor up also. :)

Upgrades
 

These are the upgrades we are doing so they are in-line with going Turbo if we choose to

- we are dumping the air to water intercooler and all of its components
- we are putting the stock intake back on
- we are upgrading the supercharger by completly removing it and putting in a Voretech V-3 Ti (just picked it up from east coast supercharging - they mainly do vet work and are very interested in what this will do, also the max on that supercharger is 26PSI and 40% more CFM)
- we are removing the intake pipe (obviously since we are removing the intake)
- we are going to go air to air intercooler... setup piping directly from the supercharger to intercooler.. we are probably going to use a spliter so we can use a dual inlet dual outlet intercooler
- from the intercooler we will send the charge pipes directly to the stock intake manifold
- adding a blow-off instead of a re-circulation
- after this we will skrew around with pulley sizes to get proper boost

currently with the stillen kit wtih 9lbs boost pulley and the 9:1 compression ratio pistons we are seeing 400 RWHP 2 7500 RPM.

we are looking to hit the 550 RWHP mark.

So, what part of the Stillen kit is left? :rofl2:

pulley's
supercharger mounting kit
thats about it

Only thing you missed is putting the MAF's in the stock location and at 550 RWHP you need UPREV MAF's cause your going to need to be around 20 PSI, I was at 12 PSI @457 WHP.. Sub'd if you actually do this . I have been planning this for 2 years. had to waiti to save the funds, Now the wife is talking baby and another house. On hold again. But do this!! Ive wanted to see if this can be done.

An nomodsjk you're past the limit, You're on borrowed time :/

Question: how does this engine hold up to turbos running at 600hp/500tq and end up blowing on a centrifugal charger at only 450hp/350tq ?

Maf location, iats and heat issues.

there's been multiple engines that went just N/A 100% stock.

some just go boom lol

Sasha from BP is building me a Air/Air, Were keeping the stillen manifold, Getting rid of all the air/water stuff. Rotating the blower 90 degrees down, pipe down to intercooler on driver side, then a y pipe out of intercooler, into 2 pipes up to the stillen manifold, and mafs will be mounted right before the TB's

What is a TB?
Are you going to use UpRev maf?

TB = Throttle body

Nope, factory Mafs will work fine with my setup, 10-12 PSI.

Once there back in the factory spot they have a lot more range.

I dont youll need the uprev mafs, could be wrong tho.

Whats the rating on the Tranny, my god that thing probably holds a lot of torque huh?

Have Sasha go ahead and make a jig for that. He can call it the stillen FMIC upgrade.

Keep us posted on this for sure. Definitely interested on how well the Stillen charger can perform if you eliminate some of the short comings of the kit.

The MT, who knows. I don't recall anyone breaking one. The most power I've seen on here is 700+wtq.

The AT, about 375-400wtq. The discs in the upper gears just can't handle the power.

800whp / 800lbs ft
That's there entry level upgrade

www.levelten.com

OH MY. :tup::tup:

That is pretty close to what JTran did with my kit. Upped the S/C rpms with a 34T-30T cog setup on the backside of the blower. I don't remember the exact numbers, but it was spinning the blower around 56,000 rpms. I saw 13 psi regularly and the car held up fine. Next, I swapped to the SI impeller like AMNVQ did and saw around 15-16 psi. That ended the stock motor. We rebuilt and went with a Single Turbo instead of modding the Stillen kit any further.

-It's a good idea to swap back to the stock IM and MAF placement. Build your charge pipes large enough ID to keep your stock MAFs from maxing out (you are going to have to flow a lot more air than the turbo guys to make the same power due to parasitic losses).
-Find a good way to brace the Stillen S/C bracket (it will flex at those power levels and cause belt slip).
-ATI makes an oversized-dampened crank-pulley for our cars that would be perfect for increasing S/C rpms, but it's really expensive (6.5" OD if I remember).
-Check out VSRs intercooler/charge-pipe setup on their Single Turbo, a mirror image of their setup should work good with the Stillen S/C. Single in/Dual out with the inlet on the top-passenger side.
-Talk to Phunk about what your fuel needs will be for 550 whp on a S/C VHR.

I hope some of that helps. Good luck man.

To add to this.

Most Turbo cars making 600 on the stock motor reliably are running E85. Is that true?

Parasitic losses to spinning the S/C. I have read more than once that it takes up to 80 hp to spin a Vortec S/C. I know it will have a lot of variables, but it's a good number to think about, that puts a 450 whp S/C cars' engine feeling the same stress as a 530 whp turbo car. Am I wrong on that assumption?

Somewhat. turbo setups induce higher pumping losses and have to deal with egt's that a supercharged engine never will.

Loving this thread