aux overdrive
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Senior User
Joined: Nov 2004
Posts: 157
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aux overdrive
have a 78 f-250 4x4 with a 4 speed transmission and i want to put a aux overdrive between the trans and the transfer all i can find is a gear vendors that gose behind the transfercase and i want to get some more lenght in the front drive shaft would be great. dose any one know how to modify one or if any one makes one?
Cargo Master
Joined: Aug 2000
Posts: 2,931
Likes: 12
From: SW Michigan
GV overdrives
Guy, yeah, you can run the GV between the trans and Tcase. Seen it done. If you have some of the old sales liturature from them, you'll see it done there that way too. I've seen some units with cracked cases too. I think what the sales people at GV are afraid of is someone hanging a T-case off the back of an overdrive without any support. The overdrive's case can't take the much weight. If the trans has support, and the T-case has its own support, the GV can be quite happy between them. Talk to one of their techs, the sales guys that answer the phone don't really have enough product knowledge for what you are wanting to do. DF,@ his dad's
Postmaster
Joined: Dec 2002
Posts: 3,959
Likes: 9
From: USA
As far as I know, you can put the Gear Vendors between the trans and t-case if the t-case is a divorce-mount. I haven't seen application info for a Gear Vendors in front of a married-mount t-case though. I would call them and ask about it.
US Gear, www.usgear.com, makes an overdrive unit that is meant to go between the trans and t-case. They also make it in an underdrive ratio too.
US Gear, www.usgear.com, makes an overdrive unit that is meant to go between the trans and t-case. They also make it in an underdrive ratio too.
