Summit Underdrive Pulleys

[Dixie Design]

I know we've talked about this set in the 04-08 forum, just thought I'd "rate" them over here.

Put about 600 miles on them already (had a couple long trips Sunday and Tuesday). Fuel economy is up, not quite a whole mpg but I've only put a tank and 3/4 on them so far. Could be coincidence, could be the pulleys.

As for performance, I'd like to think I can tell a difference. Not sure how much you can "feel" 15hp on a 3500lb truck, but when I stomp the gas to pass someone on a 2 lane I feel like I get up to speed and around them a little quicker.

Install wasn't difficult, maybe I have a good taste in my mouth because I virtually did the install twice and the last time was a breeze.

Summit's kit takes the stock length belt, Goodyear's website has a part number cross reference tool, use that, find you a Gatorback at stock length and IGNORE summit's recommendations. They don't have a clue what belt goes on an 04 4.6L. They tried 3 times for me, wrong all 3 times.

Price was GREAT at $134.