Anyone Use Underdrives?
Thread Starter
Burning Brakes
Joined: Dec 2006
Posts: 1,092
Likes: 0
From: Deerfield VA
St. Jude Donor '07
Anyone Use Underdrives?
I was considering a set of underdrive pulleys for the Corvette, mostly for the fuel savings. My Mustang picked up 2 mpg! It's a nice freebie mod, to grab a little lost HP and drag. Who makes the best pullies? And can you retain the stock belt?
Steeda makes the best for a Mustang 4.6, they give you a whole NEW damper with the new crank pulley machined in. Does anyone make one for the LS1?
John
Steeda makes the best for a Mustang 4.6, they give you a whole NEW damper with the new crank pulley machined in. Does anyone make one for the LS1?
John
Race Director
Joined: Jan 2003
Posts: 14,285
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From: Houston, Tx Got traction?
CI 5-6-7-8-9-10 Veteran
St. Jude Donor '07-'08
there's quite a few available...
ATI & ASP are the first two that come to mind. I know there are a few others too. I'm running an ECS overdrive pulley.
ATI & ASP are the first two that come to mind. I know there are a few others too. I'm running an ECS overdrive pulley.
Melting Slicks
Joined: Mar 2000
Posts: 2,975
Likes: 1
From: Northwest Iowa
I have a SLP underdrive. Wanted a ASP, as I have heard great things about them, but it was an afterthough when I was putting in the Heads and Cam. Couldn't get my hands on one quick enough 
.
So settled for the SLP. Did have to go with a new belt.
.So settled for the SLP. Did have to go with a new belt.
