tranny swap
Moderator
Joined: Jan 2001
Posts: 56,984
Likes: 2,738
From: Virginia
To put this in the correct perspective, the later 80's trucks did come from the factory with hydraulic clutches. The firewall cracking was a Ford flub-up because they did not design it heavy enough. So it was designed for the hydraulic clutch system, they just didn't do a very good job when they did it.
More Turbo
Joined: Oct 2009
Posts: 731
Likes: 6
From: Jonesborough, TN
A zf would be a bolt in. Those other trannies were never offered in these trucks, so you will have to figure out the shifter position and modify/cut the hole in the floor plate, figure out what shifter will be the correct height and if it will miss the seat, what clutch you will need, how you will hook the clutch up(4 speed bellhousing?) etc.
Not saying it could not be done, but it will take some figuring to get it all right. With the zf, you will set it up with all the parts from a 2wd f250/350, so everything will fit and work, and you can order clutch parts for a f250/350 with a 351w and the guy will come out with the proper part.
Not saying it could not be done, but it will take some figuring to get it all right. With the zf, you will set it up with all the parts from a 2wd f250/350, so everything will fit and work, and you can order clutch parts for a f250/350 with a 351w and the guy will come out with the proper part.
The TKO does have several shifter locations and crossmember mounting locations, and if I need to fab up a mount, it isn't that big a deal. I have pulled dimension drawings and the TKOs are very close to my SROD, so I don't think it will be a problem, at all.
Cost wise, there isn't much difference, between the ZF and the new Tremec TKO 600. Since I don't have a ZF already, I have to add in core charges which vary but add $3-500 to the cost of the ZF, making the TKO more competitive.
I do appreciate the suggestion, and the ZF definitely was an option, but this is why I was leaning more toward the TKO.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I do get that part of it, but from what I see of the ZF's that would bolt up to the 5.8L, they are designed for 420 ft-lbs of torque and I will be somewhat north of that depending on how the motor is tuned. Also, I wasn't crazy about the gearing, with the 5.72 (or thereabouts) first gear.
The TKO does have several shifter locations and crossmember mounting locations, and if I need to fab up a mount, it isn't that big a deal. I have pulled dimension drawings and the TKOs are very close to my SROD, so I don't think it will be a problem, at all.
Cost wise, there isn't much difference, between the ZF and the new Tremec TKO 600. Since I don't have a ZF already, I have to add in core charges which vary but add $3-500 to the cost of the ZF, making the TKO more competitive.
I do appreciate the suggestion, and the ZF definitely was an option, but this is why I was leaning more toward the TKO.
The TKO does have several shifter locations and crossmember mounting locations, and if I need to fab up a mount, it isn't that big a deal. I have pulled dimension drawings and the TKOs are very close to my SROD, so I don't think it will be a problem, at all.
Cost wise, there isn't much difference, between the ZF and the new Tremec TKO 600. Since I don't have a ZF already, I have to add in core charges which vary but add $3-500 to the cost of the ZF, making the TKO more competitive.
I do appreciate the suggestion, and the ZF definitely was an option, but this is why I was leaning more toward the TKO.
Having said that, the low 1st gear effectively makes it a 4 speed for all practical purposes. So, if resolving the issues that have been outlined are easy enough for you, then go for it by all means. But, please do a thread on it as others may want to follow in your steps.
More Turbo
Joined: Oct 2009
Posts: 731
Likes: 6
From: Jonesborough, TN
I promise to start a thread on El Guapo's build. I'm working on getting the 4-link mounts done, so I can get it blasted and powdercoated, and while the frame is away, I will put all my collected pics together and start a thread. 
Thread Starter
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Tuned
Joined: Jun 2008
Posts: 412
Likes: 0
From: sc
well fellas after talking with my transmission builder we've decided to build an AOD with a nice converter to handle the duties. it'll be less expensive & quicker to do. plus i'm adding better heads & headers..
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Somewhere I think I read that there's another OD gearset available for the AOD that gives you something like .76:1 instead of the .67:1 of the standard AOD. If that's the case you may want to explore that as, from everything I've read, the .67 is too much of a jump.
Senior User
Joined: Jun 2008
Posts: 352
Likes: 2
From: Lucknow, ON
Talk to Alan at DirtyDog Converters. That guy can build one kick butt converter for an AOD. Specific to your truck for about the same as a B&M piece of poop or TCI. One piece input shaft would be a good investment for an AOD as well, with a truck especially when you force the downshift from overdrive to second it's been known to break input shafts when some extra power is thrown at them. That's bad news bears at WOT XD
Thread Starter
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Tuned
Joined: Jun 2008
Posts: 412
Likes: 0
From: sc
Talk to Alan at DirtyDog Converters. That guy can build one kick butt converter for an AOD. Specific to your truck for about the same as a B&M piece of poop or TCI. One piece input shaft would be a good investment for an AOD as well, with a truck especially when you
force the downshift from overdrive to second it's been known to break input shafts when some extra power is thrown at them. That's bad news bears at WOT XD
force the downshift from overdrive to second it's been known to break input shafts when some extra power is thrown at them. That's bad news bears at WOT XD
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Senior User
Joined: Jun 2008
Posts: 352
Likes: 2
From: Lucknow, ON
Monster Transmission I have never personally dealt with. A good friend of mine got a 700R4 from them for his Camaro and had to send it back 4 times from Canada to Florida due to failures under daily driving. He definately wouldn't recomend them, but personally I can't say for sure what they are like. Dan at SilverFox Transmissions is another option.
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