4lb Lower Pulley w/ Stock blower?

[MACHSELF]

Is it worth putting on a 4lb lower with a 2.8 upper on a stock blower???? I have a 2.8 upper already on with a Predator 93 oct pulley tune. Will the stock blower be out of the effeciency zone???

 

[03slobra2]

You will be getting to the limits at that point. Wouldn't be a bad idea just to add some meth/water to it so you don't have to worry about it!!!

 

[SLEEPERSTATUS]

get a port first and youll get 2x the power with that set-up

 

[unit213]

Your much better off with a ported blower if you do a 4lb lower. Even with the 2.8 upper on the stock Eaton, boost falls off in the upper rpm range due to inefficiency.

 

[ctubbs]

Im running that setup right now. I like it. But i also have a ported blower sitting in the garage waiting to go on the car.

 

[rmk600]

What's the difference in a 4# or 6# lower? The car I'm buying has a 2.93 upper and I was just curious what a good supporting lower would be. Stock eaton. Thanks.

 

[bigmoose]

What's the difference in a 4# or 6# lower? The car I'm buying has a 2.93 upper and I was just curious what a good supporting lower would be. Stock eaton. Thanks.

2#'s.

i ran a 2.93/4# on my stock blower and didn't have any problems. However, i did see my power start to drop off around 5500rpm, unlike now it pulls to 6500 with the ported blower(2.76/4#).

 

[rmk600]

Gotcha... haha. Cool. Thanks for the info.

 

[MACHSELF]

2#'s.

i ran a 2.93/4# on my stock blower and didn't have any problems. However, i did see my power start to drop off around 5500rpm, unlike now it pulls to 6500 with the ported blower(2.76/4#).

I'm going to Get my blower ported by Stegmr. Stage 4, and the plenum and T/B too. Outta see good power at that point....Along with finding out what my current problem is...(lol)....:beer: