transmission
Senior User
Joined: Oct 2013
Posts: 328
Likes: 2
From: Jordan Station, ON
The 300 is the small block ford pattern, the same bellhousing pattern was used on the 302 and 351W V8's. I don't know about 5 speed automatics, but I know that people commonly put in the E4OD transmission, which is a 4spd (including overdrive) electronically shifted automatic transmission. It came in the late bronco up to '96 and the explorer up to '98. It was also in other things like the f-series until '98. If you're set on a 5 spd, the M5OD is an easy to find and simple swap, but it's a standard tranny.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,703
Likes: 2,624
From: SE Florida
There is nowhere to get a new one, either use a used one or buy a rebuilt one.
It will not fit your block. But that's the easy and cheap part. You can probably have an adapter built for a grand or two. And remember, this is the cheap and easy part.
Now comes the hard part. The five speed auto is all computer controlled. If you don't use a computer you'll have a one speed overdrive transmission. It will start in fifth gear and always stay there.
You'll need a complete wiring harness and the engine and vehicle sensors. You'll need quite a bit of programming knowhow because you'll need to modify the software as nobody has a program to control this trans behind a 300. That will need to be invented.
You do NOT want to tackle this project. You could buy a brand new loaded 2017 for far less than this will cost.
It will not fit your block. But that's the easy and cheap part. You can probably have an adapter built for a grand or two. And remember, this is the cheap and easy part.
Now comes the hard part. The five speed auto is all computer controlled. If you don't use a computer you'll have a one speed overdrive transmission. It will start in fifth gear and always stay there.
You'll need a complete wiring harness and the engine and vehicle sensors. You'll need quite a bit of programming knowhow because you'll need to modify the software as nobody has a program to control this trans behind a 300. That will need to be invented.
You do NOT want to tackle this project. You could buy a brand new loaded 2017 for far less than this will cost.
Senior User
Joined: Apr 2015
Posts: 406
Likes: 0
From: Macon,GA
Hey Ronnie,
I totally get you and I asked that same question 8 months ago. 5 speed auto is not a cost effective solution but you can go 4 speed if you are looking for that highway gear. Dents were not meant to go 80 in a 3 speed. lol I am in the process of putting in a 4r70w and getting a transmission controller to make all the computer stuff work in my dent. I got a Stroker crate engine coming so my needs may be more then yours. But a 4 speed so do what you need. AOD is the option if you want all mechanical but the 4R70w is the updated improvement.
I went to a pickapart to get a trans out of a 2000 mustang v6 and found a builder in ATL that does it pretty cheap out of his house.
I totally get you and I asked that same question 8 months ago. 5 speed auto is not a cost effective solution but you can go 4 speed if you are looking for that highway gear. Dents were not meant to go 80 in a 3 speed. lol I am in the process of putting in a 4r70w and getting a transmission controller to make all the computer stuff work in my dent. I got a Stroker crate engine coming so my needs may be more then yours. But a 4 speed so do what you need. AOD is the option if you want all mechanical but the 4R70w is the updated improvement.
I went to a pickapart to get a trans out of a 2000 mustang v6 and found a builder in ATL that does it pretty cheap out of his house.
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