Hey, I have an 06 Ls coupe and I was wondering if they made any underdrive pulleys for my ride. Thanks.

 

There is one I believe unless otherwise but as discussed in a prior thread that it's not the best idea because it can eventually lead to trouble all the time if you leave it on but it might be good to bolt on for track use I personally never had problems with a u/d pulley on my 3.1 and noticed good gains with it.

RK Sport u/d pulley

Click Here

Says it's for a cavailer but it will fit a cobalt too since they share the same 2.2L Ecotec motor.

Custom Car grills makes one.

Click Here

RSM Pulley

Click Here

Scroll down till you see lightweight crank pulley

 

thanks a lot man

 

no problem and happy modding

 

The RSM and Custom Car grill pullies aren't underdrive... Just lighter. Possible negatives of less engine damping with none of the benefits of underdrive. Not worth the dinero.

Sneaky, where'd you hear about the FFP pulley for your 3.1? I'm assuimng GM product?

 

Has anyone heard of issues with lighter crank pulley's like presented on this page?

http://www.spdusa.com/pulley_kit.htm

 

I'd be careful with under drive pulleys man, unless you know everything about what your gonna do. We just had a vette come into work with a blown motor because of the u/d pulleys

 

I am speaking about lightweight pulley's, not underdrive.