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| Performance Modifications and Other Conversations This is a place where we can have real, honest discussions about all things performance related. Whether it's power adders, engine parts, configurations, injectors, tuning, or whatever else you can thing of, let's talk about it! |
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#1
Wed, March 18th, 2009, 08:41 AM
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Summit Underdrive Pulleys
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.
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Specs: 2004 4.6L SCAB | Gryphon Programmer 87 Performance | Magnaflow True Dual Exhaust - Rear Cat Delete | S&B CAI | Summit Underdrive Pulleys | Troyer eFans (ordered) | Smittybilt Bullbar | Procomp 6" Driving Lights | UWS Toolbox | Rhino Lining | Chrome Steprails | 2.5" Leveling Kit | 265/70/R17 Goodyear Wrangler AT's Vids: Magnaflow Startup & Revs - Interior Exhaust Sounds 
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