clutch swap

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Nov 19, 2013 | 05:46 PM

stonemaster

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clutch swap

flywheel in my 87 F-250 shot, of course i cant find a new one so my mechanic thinks we may be able to put one from a 7.3 into it, same number teeth on flywheel but .... is this do-able ????

Nov 19, 2013 | 07:10 PM

hairyboxnoogle

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Not recommended, the 6.9 and 7.3 have a different external balance. Might look a single mass flywheel kit and use the older fly

Nov 19, 2013 | 07:31 PM

stonemaster

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old fly is the problem, and yes the single mass kit is what we're doing, thanx for the info

Nov 21, 2013 | 01:13 AM

stonemaster

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well it worked. 88 7.3 kit in 87 6.9 my wrench has has been doing Ford trucks for around 50 years, and a damn good friend at that, back on the road

Nov 21, 2013 | 08:43 PM

airdale94

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From: Topeka,Ks.

Sorry I missed the specifics of your post the first time I read it the other day. Supposedly the (87 only) 6.9. and the 7.3 IDI flywheels are one and the same.

Nov 22, 2013 | 03:17 PM

Aune163rd

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From: Victor, MT

They in fact are the same flywheel....for THAT year only.

Nov 23, 2013 | 01:35 AM

stonemaster

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ok I'm a little confused (what else is new)was swapping the entire clutch does with and 88 7.3 a problem because so far, (about 40 miles) is hasnt been one ???

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Nov 23, 2013 | 05:17 PM

stonemaster

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I'll find out, this could be helpful for some other members, my guy will know

Nov 24, 2013 | 08:49 AM

#10

tjc transport

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From: Marlboro Mental Hospital.

my 88 had a dual mass piece of crap in it .

Nov 24, 2013 | 09:20 AM

#11

Chevy_Eater

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The '87 is factory dual mass when it had the ZF.

Nov 24, 2013 | 09:25 AM

#12

tjc transport

i ain't rite

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From: Marlboro Mental Hospital.

yup. if it has a ZF trans it is dual mass. if it has a 4 speed it is single .
but it is very easy to put a single flywheel setup on a ZF trans truck, and commonly done to get away from the problems of the dual mass.