Tranny help
Thread Starter
|
Senior User
Joined: Jan 2007
Posts: 122
Likes: 2
From: High Desert
Tranny help
I am trying to put a new(to me) tranny in and got one from a dismantaling shop and mine is Ao4d or whatever cant member if the 4 is before or after the o but anyways!... The new one has the number 56 on it and mine says 37... would it still work?
Post Fiend
Joined: Sep 2004
Posts: 5,231
Likes: 1
From: Near Fresno, California
Ouch, those were the years that had a lot of changes. My guess is the tranny stock to the 85 is the old style where engine vacuum and throttle position controlled the shifting and the lock-up torque converter. By 1990 the tranny had changed with an separate "engine control box" commanding the shifting. Sometime around then the ECO was incorporated into the computer.
There are work-arounds, but you need a special electrical harness for the transmission. Check to see if the two trannys have exactly the same wires, and connectors to insure they are compatible.
I know that if you drive it without the correct lockout you can ruin the torque converter in 50 miles or so.
I am a reasonable shade-tree mechanic and I wouldn't attempt what you are doing without some skilled guidance - even better, someone to help that had made this swap before. I strongly urge you to ask a more knowledgeable person what is needed.
You need to know for sure what tranny you had, and which one you are trying to install.
Sorry, wish I could be more help.
There are work-arounds, but you need a special electrical harness for the transmission. Check to see if the two trannys have exactly the same wires, and connectors to insure they are compatible.
I know that if you drive it without the correct lockout you can ruin the torque converter in 50 miles or so.
I am a reasonable shade-tree mechanic and I wouldn't attempt what you are doing without some skilled guidance - even better, someone to help that had made this swap before. I strongly urge you to ask a more knowledgeable person what is needed.
You need to know for sure what tranny you had, and which one you are trying to install.
Sorry, wish I could be more help.
Last edited by WillyB; Jul 28, 2007 at 03:18 PM.
Posting Guru
Joined: Jan 2004
Posts: 1,254
Likes: 0
From: Murray
^^^Agreed....its gonna be a tough one,
Your gonna need more experienced input for sure...Im gonna hazard a guess and say that it may not...if your old one is an auto with over drive and the new one isnt over drive. You might run into compatability issues with the computers and such that Clint mentioned.
Good luck and sorry I cant be more help either,
-Chris
Your gonna need more experienced input for sure...Im gonna hazard a guess and say that it may not...if your old one is an auto with over drive and the new one isnt over drive. You might run into compatability issues with the computers and such that Clint mentioned.
Good luck and sorry I cant be more help either,
-Chris
Thread
Thread Starter
Forum
Replies
Last Post
blue66tang95f150
1994.5 - 1997 7.3L Power Stroke Diesel
19
Dec 6, 2014 08:22 PM
Shiveron
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
2
Sep 30, 2014 06:44 AM
