2.76 pulley with 4lb lower

[Ian torres]

I had my car tuned a couple months ago with 2.76 upper it made 436hp and 489tq I am thinking of doing a 4lb lower. What kind of number can I expect the car has exhaust, and intake. What can I expect from this setup? How would the stock blower like that amount of boost?


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[01yellercobra]

Skip the lower. You'll just overspin the blower and make heat.

 

[NotoriousGT350]

Stock blower with 2.8 upper, CAI, CB exhaust I made 465rwhp/494rwtq on a Predator can tune.

 

[IronTerp]

I had my car tuned a couple months ago with 2.76 upper it made 436hp and 489tq I am thinking of doing a 4lb lower. What kind of number can I expect the car has exhaust, and intake. What can I expect from this setup? How would the stock blower like that amount of boost?

That's about what I made with the upper pulley setup on my 03'. I would suggest porting the blower before you add any boost. The Eaton M-112's have good room for improvement from porting the blower. I got a 44 RWHP increase from a Steig Stage IV port back in the day. Then maybe you could consider the lower pulley. You can spin the M-112 that fast if you support your setup with the correct cooling modifications.

 

[CobraBob]

I agree with Dwight's advice. If you're going to stick with the Eaton, get it ported and then add the lower. Fuel and cooling supporting mods are a must, of course.

What octane fuel are you using?

 

[Venom351R]

Decide if you want the eaton long term or not. If you do then go ahead and get it ported. If you are thinking of going with a bigger blower at some point don't waste the money on a port and put that towards a bigger blower. I did the 2.76 on mine with exhaust / intake and made 483/517 but I got used to it pretty quick. Its almost finished with getting a VMP Gen3R put on it now w/ a fuel system. All depends on what you think you will be happy with.