e4od transmission swap.

Reply Subscribe

Thread Tools

Search this Thread

Mar 6, 2016 | 02:59 AM

#16

Lead Head

Lead Driver

Joined: Jul 2007

Posts: 7,868

Likes: 9

From: Rhode Island

E4ODs were used from 1990-1996. Any 351 truck/van will be an E4OD, a 302 might be a 4R70W or an E4OD. If it's an F/E 250/350 302, it will be an E4OD. Nearly every 4.9 also came with the E4OD.

Mar 6, 2016 | 05:45 AM

#17

bashby

Post Fiend

Joined: Nov 2005

Posts: 7,437

Likes: 4

From: Charles Town, W bygod Va

You could use a 4x4 trans and put a transfer case behind it and a shorter driveshaft. If you have the need you would have low range.

Mar 6, 2016 | 06:58 AM

#18

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,741

Likes: 2,669

From: SE Florida

Quote:

Originally Posted by mytrustyford

So E150's and E-250's are a dime a dozen in my area (not literally). What engines and years happen to have the e4od in them?

Your answer is several posts above, copied here:

Quote:

Originally Posted by Lead Head

E4ODs were used from 1990-1996. Any 351 truck/van will be an E4OD, a 302 might be a 4R70W or an E4OD. If it's an F/E 250/350 302, it will be an E4OD. Nearly every 4.9 also came with the E4OD.

There are also E4ODs in the 460 and diesel trucks and vans. They won't work for you.

Mar 14, 2016 | 09:37 AM

#19

mytrustyford

Thread Starter

New User

Joined: Feb 2016

Posts: 22

Likes: 0

From: Flint MI

So I've happened to find a Allison trans that is made for a 300 I6. Have not bought it yet as a buddy said I'd need to change the computer on the engine. But I've thought that the mid-early 90's fords have two different computers, one for the engine and one for the trans. Any thoughts?

Mar 14, 2016 | 11:07 AM

#20

NotEnoughTrucks2014

Fleet Mechanic

Joined: Mar 2014

Posts: 1,926

Likes: 116

From: Saskatchewan Canada

No, the EECIV ECU handles both engine EFI and transmission control. If it does not see the E4OD, it's not going to be happy. You could go with a non OD, or manual transmission ECU, but that brings you to how are you going to control that Allison?

On that, Why the swap? The E4OD is pretty strong, although it can be a little frustrating in terms of maintenance. So can the Allison. Ask the GM guys about broken extension housings. Also, I would be a little skeptical about finding an Allison designed to go behind a Ford 6. Possibly something designed for an SAE bellhousing coupled with an industrial bellhousing for the Ford, but this sounds pretty expensive and squeezing this into your pickup chassis will be a nightmare.