mating a ZF 5 speed tranny to 79 or older 460 - 460 Ford Forum
Driveline Transmission, Clutch, Gearing, etc...

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post #1 of 28 (permalink) Old 11-03-2012, 06:59 AM Thread Starter
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mating a ZF 5 speed tranny to 79 or older 460

i and putting a ZF 5 speed tranny behind a 77 460 in a 1979 for f-250 trying to figure out what clutch combo to use i had a clutch for a 93-97 460 but it didnt fit my flywheel will a 87-92 clutch fit the older flywheel or do i have to get a newer fly wheel and have it zero blalanced to make this combo work and info would be greatly appericated
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post #2 of 28 (permalink) Old 11-03-2012, 08:47 AM
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I can't answer about the clutch, but be careful with the pilot bearing. It needs to be the bearing, not the brass bushing.

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post #3 of 28 (permalink) Old 11-03-2012, 07:20 PM Thread Starter
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thank you for the info that part i did know but i apperaicate your response
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post #4 of 28 (permalink) Old 11-03-2012, 08:04 PM
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No problem. I have a ZF for my 429 as well, but I got a deal on a brand new FRPP flywheel/clutch set that mates to it. I checked for numbers, but all I can see is centerforce on the pressureplate.

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post #5 of 28 (permalink) Old 11-03-2012, 08:54 PM
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use the stock clutch and flywheel and have the balance weight cut off the back of the flywheel....works great
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post #6 of 28 (permalink) Old 11-04-2012, 06:23 AM Thread Starter
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thats what i thought i had to do but i wasnt sure you dont have to have the balance checked after you do that? thank you for confirming that for me
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post #7 of 28 (permalink) Old 11-04-2012, 06:38 AM
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I had a T5 flywheel for a 5.0 HO rebalanced for a 351W, they just drilled out some metal on the rear to take it from a 50oz balance to a 28oz. It cost me $75. I have a 92 460 clutch/flywheel set up here that I have left over from my diesel swap if you need any part numbers or sizes. I believe it's a 12" clutch. I re-drilled the 460 ZF to fit my 7.3IDI.

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post #8 of 28 (permalink) Old 11-04-2012, 07:45 PM Thread Starter
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thank you i will keep it in mind if i need any mesurements i think from the info you guys have provided i know what i need to do to make this conversion work thank you all
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post #9 of 28 (permalink) Old 01-25-2013, 01:49 AM
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Did you ever get your clutch straightened out? I'm doing the same thing with a 70's 460 and have a 93 or 94 zf5 I want to mate to it. Looking for the same info you were. If I got my info right I can use a zf5 clutch for a 93 460 just get the flywheel neutral balanced and use a bearing for the pilot and ill be good to go?
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post #10 of 28 (permalink) Old 03-20-2013, 02:29 PM
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I cant find no place around my area to zero balance my external balanced flywheel. Like WTF?
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post #11 of 28 (permalink) Old 03-20-2013, 06:32 PM
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Quote:
Originally Posted by fordman1979 View Post
i and putting a ZF 5 speed tranny behind a 77 460 in a 1979 for f-250 trying to figure out what clutch combo to use i had a clutch for a 93-97 460 but it didnt fit my flywheel...
Why didn't the 1990's flywheel fit? It should.

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post #12 of 28 (permalink) Old 03-20-2013, 06:48 PM
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He's probably meaning the clutch didn't fit his flywheel for his 77 460 which should be a D1VE block (internally balanced) thus using a 11" clutch. Which you know in 79 they used the externally balanced engine with a flywheel that uses a 12" clutch.


That's what I am thinking.
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post #13 of 28 (permalink) Old 03-20-2013, 07:07 PM
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I will be doing the same thing! tho I have a 86 460 and dont have a ZF yet but am hoping I can find what I need in this thread soon?

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post #14 of 28 (permalink) Old 03-20-2013, 07:15 PM
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Cool

Ooops I missed that. If that's the case, then the answer is that the earlier F250's with the Borg-Warner (BW) 4-speeds use a flywheel with an 11-inch clutch, while the 1988 and up F250s with a ZF-5 speed use a flywheel with a 12-inch clutch. Both flywheels have a specific bolt pattern to accomodate their respective pressure plates.

If you want to use the ZF 5-speed behind an F250 that had a T-18 ot T-19 BW 4-speed (or a C6) then the simplest way is to use all the ZF 5-speed power train parts aft of the crankshaft flange, meaning use the 12-inch flywheel, clutch and pressure plate that is used with the ZF 5-speed (there are alternate ways but this is probably the easiest).

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post #15 of 28 (permalink) Old 03-20-2013, 07:20 PM
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With my 79 Bronco I got...

I gather up some parts

Clutch and brake assembly from a 80-90ish Ford (Looks like it will fit in the same place as my current 79 brake but will have to check on the brake length though.

I've got the complete hydraulic cylinder and line.

Now I got a 79 Flywheel but I think it is externally balanced but is a 12" clutch flywheel BUT I can't find no one around my area to zero balance it.
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