Under drive pulley

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Jan 30, 2007 | 08:59 PM

lugnutt

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Joined: Nov 2006

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Under drive pulley

Does anyone make an underdrive pulley for the V10? I have an issue with my truck. Under heavy acceleration, when it shift gears. All the accerories on the engine keep spinning too fast, and the belt squeels until I let out of the throttle.
Ive upgraded the trans, so it shifts instantly and hard.
Any thoughts? New belt!
thanks lug

Jan 31, 2007 | 09:20 AM

FortyFords

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Joined: Jan 2002

Posts: 5,859

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From: USA

Get a new belt tensior and a new belt.
The springs in the tensior get weak
Also chk all pulleys for bad bearings.
Rich

Jan 31, 2007 | 09:38 AM

krewat

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Joined: Jul 2002

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From: Long Island USA

And get a new belt with the toothed ribs - Dayco makes one, cured my (entirely stock) V10 from squeeling the belt at the 1-to-2 shift at 5000+RPMs

By the way, this was a known issue with 2000-2001 (if I recall correctly) V10's... Ford made an updated toothed belt, or something to that effect.

Jan 31, 2007 | 10:19 AM

Fredvon4

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Aw come on now guys....

we can have 6 or 8 length wise RIBs but I have not see a gimler toothed belt on a Ford FEAD unless it was twisting a 6/71 roots!

FWIW... 6 rib belts will work ON 8 rib pulleys but the 8 rib belt is too wide for the 6 rib pulleys.....

There are still the correct width serpentine belts in the replacement parts system that have NO ribs... they squeal a LOT!

Jan 31, 2007 | 07:19 PM

TeamMudd

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Joined: Jun 2005

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From: central Louisiana

as for UNDERdrive pullies..........i know JET, EDELBROCK and a few other's make under drive pullies......when i was looking for them, i found that most brands revert you back to the 5.4 kit. i was "told" that all the pullies (crank, alt, pwr steering) from the 5.4 kit will fit the V10's as well! the kits came in both 6 & 8 groove i think

i never got around to ordering a kit due to the fact that ALL the kits i checked into stated that if you run larger than 36-37" tires (even with re-gearing) NOT to run an underdrive pully set...........so i can't say i know what they'll do, or how much you will gain, or notice from the kit................

but try you a good new name brand belt (like gates) and see how that works. i changed my 2000 rangers serp belt from the stock to a GATES brand belt after a mudding trip and never had anouther sceech out of it!

Feb 1, 2007 | 12:50 AM

MadMedic20

Laughing Gas

Joined: Jan 2004

Posts: 1,142

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From: Denver, CO

The stock power steering pump on the SD sucks anyways. I wouldnt want to slow it down and make the already stiff low speed steering any worse.

Feb 1, 2007 | 07:39 AM

mizzitch

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Joined: May 2004

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Quote:

Originally Posted by MadMedic20

The stock power steering pump on the SD sucks anyways. I wouldnt want to slow it down and make the already stiff low speed steering any worse.

Agreed - I've stomped on the brakes (dropping the engine rpm real low) and tried to steer, let's just say I'm glad there was room to not make the turn.