zf-6 clutch - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 09-22-2010, 07:40 PM Thread Starter
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zf-6 clutch

just picked up a e99 f-250 2x4 with a 6-speed, it has 475,000 miles and a bad rear end. i plan to just use it as a work truck, with a few minor mods, for example intake, chip, and exhaust. my question is how far can u push a stock clutch? i know it all depends on how u drive it and what condition it is in. how far have you pushed it before you had it slip.

03 super cab, 6.0l, short bed, 4x4, muffler and cat delete, 285/75R16 dunlop rover m/t, SCT x3 tuned by kem performance, auto meter gauges, cfm intake manifold.
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post #2 of 7 Old 09-22-2010, 09:31 PM
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you dont think its original do you?

Dave

2002,7.3L,6sp,cc,lb,xmonitor,1705,zoodad,AFEstg2, wicked wheel,hpx ss line,straight pipe,325/65r18 mtz,kmc 18x10,6.5"procomp lift & track bars,firestone bags,viair 480,5g tank,train horns,70g transfer tank,leer shell,12k warn & hidden bumper kit,05-07 H-D headlights,35W 5K HIDs in head/fogs
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post #3 of 7 Old 09-22-2010, 10:58 PM
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With that many miles, even if it's been replaced once or twice, it's not a good idea.
You're better off getting an upgraded South Bend or Valair clutch rather than risking a clutch exploding (worst case scenario) and causing you to need a new transmission as well.

Back to the blue oval: 08 F350 FX4 CCLB - DPF/EGR delete - Spartan tuner - S&B CAI - 4 in DP to 5 in SP

First truck: Early 99 F350 SC LB ZF6 4WD - SOLD

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post #4 of 7 Old 09-23-2010, 04:24 AM Thread Starter
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don't now when it was replaced, i bought it off my buddy's company he should have it on record of when it was replaced, if at all. i was more curious as to how far other people have pushed it.

03 super cab, 6.0l, short bed, 4x4, muffler and cat delete, 285/75R16 dunlop rover m/t, SCT x3 tuned by kem performance, auto meter gauges, cfm intake manifold.
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post #5 of 7 Old 09-23-2010, 05:47 AM
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my truck has about 200,000 and its on its third clutch. It slips in 6th gear only if I shift from 5th getting on it. But if let off it stops slipping and wont slip again.

1997 Ford F350 CC LB 4x4
2007 F350 axle/suspension swap
238/100 Full Force Stage 3 Injectors
H2E Turbo
Fully Built Trans with Triple Disc Billet
Tony Wildman Chip
Superduty IDM
5'' Straight Pipe 7'' custom sideways bed stack
Leveled on 37s
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post #6 of 7 Old 09-23-2010, 02:54 PM
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If your worried about it make it the first upgrade you do. A chip and intake do no good if the truck can't move or clutch slips with the slightest power adder.

2001 F-250, 6 speed trans, BDP Tunes, Autometer Ultralite gauges
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post #7 of 7 Old 09-25-2010, 01:35 AM
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ran mine for about 130,000 before replacing. dont do much towing with it though
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