Tranny question

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Jan 16, 2003 | 08:40 PM

idealtrucks

Thread Starter

Fleet Mechanic

Joined: Jul 2002

Posts: 1,297

Likes: 34

From: S/W Virginia

Tranny question

I have a chance to get a 4 speed tranny out of about a 75 model f250 4 wheel drive. I was wondering if this will work on my 71 2 wheel drive truck?

Jan 16, 2003 | 08:51 PM

Freightrain

Lead Driver

Joined: Jan 2003

Posts: 9,893

Likes: 12

From: Ohio

Tranny question

It should physically fit. I'm not sure if the transfer case is all part of tranny. I'm not up on 4wd. If it is all seperate, then I dont see why not.

Do you have std shift now? Or are you switching from auto?

Larry

1967 F100 352/c6
1969 F100 428CJ/4 spd
1959 B model Mack
and a few hot rod FORD cars too

Jan 16, 2003 | 09:20 PM

gtex

Lead Driver

Joined: Apr 2001

Posts: 6,175

Likes: 21

From: Texas

Tranny question

You'll need a bell housing to match your engine family. It may be the same, but not a given.
You may also have to get or make a different driveshaft. What engine/tranny do you have now, and what engine is in the donor?

Jan 16, 2003 | 09:21 PM

Art

Senior User

Joined: Jul 1999

Posts: 472

Likes: 1

From: USA

Tranny question

Keep in mind most 4WD's have the speedometer cable come out of the transfer case.

The 4WD transmission may not have a provision for a speedometer hookup.

Art
https://www.ford-trucks.com/user_gallery/displaythumbnail.php?&photoid=3467&.jpg

Jan 17, 2003 | 10:14 AM

idealtrucks

Thread Starter

Fleet Mechanic

Joined: Jul 2002

Posts: 1,297

Likes: 34

From: S/W Virginia

Tranny question

[updated:LAST EDITED ON 01-17-03 AT 11:18 AM (EST)]i wouldnt be too worried about a speedo cable....its just an old truck. Im not sure what the tranny came out of. My truck right now has a 360 in it out of about a '75 f250. The engine originally had a 4speed on it but right now its got a 3 speed manual. the bell housing is the same. really what im wanting to know is if the back of the tranny has the yoke coming out of it to hook to a driveline, or is their some kind of splines to the transfer case. i can get the tranny for 25 dollars

Jan 17, 2003 | 10:39 AM

1968F250LWB

Elder User

Joined: Jun 2002

Posts: 851

Likes: 0

From: Elizabeth City, NC

Tranny question

Jan 19, 2003 | 02:56 PM

idealtrucks

Thread Starter

Fleet Mechanic

Joined: Jul 2002

Posts: 1,297

Likes: 34

From: S/W Virginia

Tranny question

Anyone know anything about this?????

i need some help

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Jan 19, 2003 | 05:26 PM

fatdaddy

Posting Guru

Joined: Sep 2001

Posts: 1,531

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From: in the country

Tranny question

The np435 in my 77, f250 , 4x4 has a 10 spline by 1 and 1\16 inch shaft. I would think that the 4 speed out of a 75 4x4 , f250 would probably BE the same dimensions. There is a possibility that the 4 speed in the 2x4 will have a DIFFERENT length of output shaft than the 4x4. Even if it is a 10 spline by 1 and 1\16 inch shaft it maybe a different length!!! If this is the case then the rear tranny mount quite possobility will NOT matchup. If you have access to BOTH trucks I would measure the Distance from the back of the tranny... back to the front of the rear Tranny mount and see if the distance is the Same. In any event that tranny, if in decent shape is worth 25 several times over , period. I would buy it and trade or resell for one that Will work. ...fd