Summit Underdrive Pulleys

[Dixie Design]

Originally Posted by DOD 4.6

so are the power gains mostly in the upper rpm range? due to the fact that you can feel it while passing

Correct me guys if I'm wrong, but I'd say it's across the board. You're spinning less for the same speed.

[3StarJ.R.]

Seeing your thread about underdrives reminded me I picked one up a couple of years ago @ a going out of business performance shop sale. I forgot I had it!

If anyone is interested I'll sell this one for what I paid. 85.00 bucks plus shipping.







http://www.dougherbert.com/underdriv...t-p-25782.html

[Dixie Design]

That's a STEAL! Wish you had found them before I bought mine!

[Desert Racer]

I know you have a 4.6 but does Summit make them for the 5.4? Thanks Cody

[88Racing]

Originally Posted by Desert Racer

I know you have a 4.6 but does Summit make them for the 5.4? Thanks Cody

Pretty much stuck with troyer for the 5.4. That's where I got mine.
Rpm outlet also has them(moto blue) but customer service isn't the greatest.

Lars

[Desert Racer]

Thanks man, damn mod bug! lol

[88Racing]

Originally Posted by Desert Racer

I know you have a 4.6 but does Summit make them for the 5.4? Thanks Cody

The 4.6 ud pullies are all over out there. The 5.4 ud pullies are hard to find and if you do find them they run $75 to $100 more. Troyer performance is where I got mine from for the 5.4. There is a couple of more places but they have horrible customer service. Watch out when you search for them online some retailers mix up the products or don't give good numbers. You might order a set for a 5.4 and end up with a 4.6 set. So my advice go with a performance shop who has used them and are selling them.

Lars

[Desert Racer]

Originally Posted by 88Racing

The 4.6 ud pullies are all over out there. The 5.4 ud pullies are hard to find and if you do find them they run $75 to $100 more. Troyer performance is where I got mine from for the 5.4. There is a couple of more places but they have horrible customer service. Watch out when you search for them online some retailers mix up the products or don't give good numbers. You might order a set for a 5.4 and end up with a 4.6 set. So my advice go with a performance shop who has used them and are selling them.

Lars

I plan on ordering a set from Troyer here in the next month or two. Need to give the card a break with mods lately.

[BlackSTX]

Quick question for you.... Do you experience any charging issues at lower RPM's? Coworker had a kit on his Mustang and said that was the only negative he experienced.

[Power Hungry]

Undercharging at idle is a common problem, especially with E-Fans. The only thing you need to do is raise the idle 50-75 RPM w/o fans or about 100-125 RPM with fans and you're good to go.