Transmission question!
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From: TN
Transmission question!
So I've been searching this forum for a while for miscellaneous things, and so far everything is very helpful! Something I can't seem to find is a transmission swap for an '80 F250. I've read that it was a "special" year, so I'm hesitant to see if the '82 swap to a 5 speed manual is the same. Any ideas?
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From: Denver Metro Area, CO
Most of the one-off attributes of the 1980 variants are electrical; the only thing coming to mind that might affect you is the backup light switch/neutral safety switch...
If I'm understanding your question, you've got a 1980 truck and want to put in a transmission from a 1982?
I don't understand the 5-speed stuff, though; trucks never got 5-speeds from the factory until 1987 at the earliest.
BTW welcome to FTE.
If I'm understanding your question, you've got a 1980 truck and want to put in a transmission from a 1982?
I don't understand the 5-speed stuff, though; trucks never got 5-speeds from the factory until 1987 at the earliest.
BTW welcome to FTE.
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From: Denver Metro Area, CO
There's more to it than that; the hydraulic clutches came about in 1983, his 1980 uses a mechanical variant and he'll need to convert to the hydraulic variant if he needs to use a hydraulic clutch.
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What 5-speed are you thinking of? And, what engine do you have? The reason I ask is I'm swapping a ZF5 into an '81 with a 351M. If that's what you are contemplating let me know 'cause I have a thread on it.
FTE Legend
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From: Northeast, OK
Very true. We need to know the details since there are gotcha's on some combo's for some years.
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Sorry for the delay everyone, been recovering from a nasty bug!
Here's the specs of my truck
1980 Ford F250 4x4
351M 2bbl with 4spd manual
As for what transmission to put in, I haven't found one yet, as I don't know about bolt patterns or anything. Looking into it, would a ZF5 work?
Here's the specs of my truck
1980 Ford F250 4x4
351M 2bbl with 4spd manual
As for what transmission to put in, I haven't found one yet, as I don't know about bolt patterns or anything. Looking into it, would a ZF5 work?
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Cargo Master
Joined: Aug 2007
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From: New Zealand
That's the same swap that Gary is doing - just one year later.
You can follow him at Dad's ZF5 Swap - Ford Truck Enthusiasts Forums - step by step by blow, by extrapolation!
Sorry, Gary.....we give you a hard time!
You can follow him at Dad's ZF5 Swap - Ford Truck Enthusiasts Forums - step by step by blow, by extrapolation!
Sorry, Gary.....we give you a hard time!
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Ford Parts Specialist
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From: Simi Valley, CA
1983: F250/350 6.9L diesel & 7.5L (460) only. 1984 for everything else.
E3TZ-7A543-A .. Clutch Master Cylinder ~ 1983 F250/350 6.9L & 7.5L // 1984/86 F150/350 & Bronco all I-6 & V8.
E3TZ-7A543-A .. Clutch Master Cylinder ~ 1983 F250/350 6.9L & 7.5L // 1984/86 F150/350 & Bronco all I-6 & V8.
FTE Legend
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From: Northeast, OK
That's the same swap that Gary is doing - just one year later.
You can follow him at Dad's ZF5 Swap - Ford Truck Enthusiasts Forums - step by step by blow, by extrapolation!
Sorry, Gary.....we give you a hard time!
You can follow him at Dad's ZF5 Swap - Ford Truck Enthusiasts Forums - step by step by blow, by extrapolation!
Sorry, Gary.....we give you a hard time!
If you get a ZF5 from behind a 460 it will bolt up behind the 351M as those engines share a bell housing bolt pattern. But, there are some issues. Let me summarize the issues I see with installing a ZF5 behind a 351M:
- The 460's flywheel sits ~1/2" further rearward than that of the 351M or 400.
- Given that, the ZF5's input shaft won't reach the pilot bearing in the end of the crank.
- You'll need a clutch from a 460 as the spline size of the ZF's input shaft is larger than that of the transmissions used with the 351M/400. However, not just any clutch will fit if you use the stock 351M flywheel and pressure plate as they will accept an 11" clutch but most 460 clutches are larger than that.
- And, with the flywheel sitting further forward the splines on the clutch disk will have very little engagement with the splines on the input shaft
- Further, from what I've read and seen, the passenger's side exhaust manifold will hit the ZF5 due to the tranny having a larger casting size at the front.
The solutions to all of those problems but the exhaust manifold one are set out in that thread. Having said that, one of the major solutions is the spacer that moves the flywheel .300" to the rear and that piece is just now being machined, although its design has been done for some time. But, the exhaust manifold problem hasn't been sorted yet, although three possible solutions have been put forth.
So, it can be done and others have done it. But, my goal has been to do it with off-the-shelf parts and I think I'll come close to that goal with the exception of having to make the spacer.
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From: Denver Metro Area, CO
Ah, thank you... I seem to remember that this change was phased in over time but can never remember the details....
Ford Parts Specialist
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From: Simi Valley, CA
would this spacer be something that can be purchased now, or would I need to take specs to a machine shop to get made?
FTE Legend
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From: Northeast, OK
Glad to help. No, the spacer isn't available for purchase, although if it works out well and there are enough people that want them maybe something could be worked out. But, I will be happy to provide detailed drawings that any machine shop could use to make them. However, that'll have to wait until I prove the theory, and then the drawings will reflect any changes that may be required.
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