I think for a manual a Whipple would be better. Turbo lag would be perdy annoying. I've kept an eye on dyno numbers for both. Pound for pound of boost, numbers have been close. Torque has been even but the STS has 20hp more so far. I waiting on some new numbers from Whippled496.
I thought STS kit was very easy to install. I'm sure Whipple's is too. You could buy a used STS kit off a 6.0l truck. There is no difference in the kit except turbo size. They do however have different pcv set up. But its not a big deal to fix.
I should have my turbo on my new truck in a few months. I want to see what a stock 8.1l will do with 10+psi!

 

Yeah....you and me both!

I might head back to the dyno this spring and see where i am.

 

BTW before I forget again. The 8.1l in medium duty trucks have inch bigger crank pulley. You can speed up the Whipple and have more belt contact!

 

Cool, didnt realize that. What effect would that have on the alternator, power steering pump, AC compressor, etc? What is the size of the crank on the light duty 8.1L trucks? 7"?

 

I'm thinking that they don't want you to supercharge a stickshift because their system wouldn't be able to tune out the knock that comes from lugging an engine. I know if I had all that torque I would stick it in fourth and floor the gas at 1200 rpm. So would you.

 

Just speed them up a little. I'm sure its no higher rpm than a small turns at 6000rpm. LOL

 

The STS can be put on in a afternoon.

I was told the reason the whipple can not be used on the manual is because there is no way to make the boost bypass (blow off valve) work.

So when your under 5-6 psi and you go to grab the next gear the throttle plate shuts, the boost has to go some place. If an auto when your wide open it just shifts... all the boost is still being used.

Tierod, be carefull on running to much boost. these trubos that STS provides are made to run a certain amount of boost. Brads on his camaro was running 6.5 psi.. we did a fmic and it dropped boost pressure at the manifold down to 4 psi. So he cranked the boost controller to get the pressure back... turbo only lived about 4 weeks. STS said with the fmic and him showing 7 psi that the trubo was making around 12-13 psi... which killed the seals, causing oil problem and it ended up eating its self.

 

just throw the pully away and have grooves cut right in the shaft

 

Better yet, maybe i will find a 1" sprocket and make it all chain driven.

 

Hey at least you wouldn't have to worry about any slippage