do you guys know what trans i need im wanting to put a 5 speed trans in my 85 f250 it has a four speed right now any help would be nice

 

What motor? 2wd or 4x4?

 

An '85 would be either a 300, 351w,460, or oil burner, right?

If so, the next question is what kind of clutch do you have? Methinks you should have a hydraulic clutch already.

If so, you can use the Ford-installed ZF 5 speed. These use an integral bell, so you MUST get one from the same engine series. Clutch is hydraulic, internal for the 300-351w, external for BB and OB.

Another alternative which bolts to your existing bell, uses your existing clutch but requires an adaptor, is the NV4500.

Mazda 5 speeds from F150s would be an alternative if you don't tow or haul max loads. These are 300/351w pattern only, integral bell, hydraulic clutch.

List 'o trans:

Domestic Truck Tranny Guide

NV4500 info:

High Impact - NV4500 5spd

https://www.ford-trucks.com/article/...nsmission.html

Very important to get either 4x2 or 4x4 version and determine TC compatibilty if applicable.

Older Clark transmissions might work, but bell to trans might be an issue.

 

im swaping to a 460 the truck is 4wd and it does have hyd slave cyl

 

When you seek out your 460, find one with the ZF attached, most of the job is done.

Good luck with it.