Borg Warner swap options
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Freshman User
Joined: Oct 2014
Posts: 25
Likes: 0
Borg Warner swap options
Hi gang;
Thanks for the help on my last thread, involving stabbing my rebuilt motor. Truck is running great!!
I am thinking about ditching my T85 Borg Warner overdrive unit. The solenoid is busted and first gear is sounding, well, rowdy. I'd love to keep this transmission and get the overdrive working, but it's my daily driver.
I'm interested in all options. I know I can't just grab a T5 out of an '89 mustang, as much as I'd like to. I would prefer to keep it a manual, but don't want to have to add hydraulics. Basically, what's cheap, easy and functional?
I'm looking for factory swaps, including a 3 speed (303?) unit, auto (C4?), late model, overdrive, whatever.
So, what are issues with swapping out? Driveshaft is my biggest concern, since this has the overdrive unit...
Truck is a '69 F100, 2WD, mild modified FE 390.
Thanks for the help on my last thread, involving stabbing my rebuilt motor. Truck is running great!!
I am thinking about ditching my T85 Borg Warner overdrive unit. The solenoid is busted and first gear is sounding, well, rowdy. I'd love to keep this transmission and get the overdrive working, but it's my daily driver.
I'm interested in all options. I know I can't just grab a T5 out of an '89 mustang, as much as I'd like to. I would prefer to keep it a manual, but don't want to have to add hydraulics. Basically, what's cheap, easy and functional?
I'm looking for factory swaps, including a 3 speed (303?) unit, auto (C4?), late model, overdrive, whatever.
So, what are issues with swapping out? Driveshaft is my biggest concern, since this has the overdrive unit...
Truck is a '69 F100, 2WD, mild modified FE 390.
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
A short-shaft Tremec TKO-500 will bolt right up to your bell.
Dunno about the driveshaft length but when I swapped from a NP435 to the TKO, I used a C6 coupling shaft (longbed spec) cuz the TKO is only one inch longer.
Contact Bruce at Modern Driveline for a complete set up... it'll run about $2,800.
.
Dunno about the driveshaft length but when I swapped from a NP435 to the TKO, I used a C6 coupling shaft (longbed spec) cuz the TKO is only one inch longer.
Contact Bruce at Modern Driveline for a complete set up... it'll run about $2,800.
.
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Freshman User
Joined: Oct 2014
Posts: 25
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That's sounds like a great option, but definitely on the higher end.
Let me restate the question:
If my current setup fails and I need to do a quick swap, the standard 3-speed is a direct tranny swap? I would think my drive shaft would be shorter because of the overdrive unit.
Let me restate the question:
If my current setup fails and I need to do a quick swap, the standard 3-speed is a direct tranny swap? I would think my drive shaft would be shorter because of the overdrive unit.
Posting Guru
Joined: Mar 2016
Posts: 1,412
Likes: 1
From: Barre Mass
That's sounds like a great option, but definitely on the higher end.
Let me restate the question:
If my current setup fails and I need to do a quick swap, the standard 3-speed is a direct tranny swap? I would think my drive shaft would be shorter because of the overdrive unit.
Let me restate the question:
If my current setup fails and I need to do a quick swap, the standard 3-speed is a direct tranny swap? I would think my drive shaft would be shorter because of the overdrive unit.
Senior User
Joined: Dec 2016
Posts: 210
Likes: 0
I would keep the O/D in there and try to have it repaired. there are parts out there. I have looked because I run the same drivetrain. Drivetrain.com has rebuild kits
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Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
With just about any swap there is going to be driveshaft issues. Either get the driveshaft out of the same donor that the tranny came out of or take your existing driveshaft to a local driveshaft company. They can either cut it shorter and weld it back together or re-tube it with a longer tube.
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