need auto trans help
Thread Starter
Junior Member
Joined: Mar 2009
Posts: 52
Likes: 0
From: sioux lookout ON. Canada
Car: 83 firebird
Engine: 350
Transmission: 700
Axle/Gears: 3.23
need auto trans help
I have a chance to buy a 95 GMC 1/2 ton with a 350 and auto. I would like to replace the tired 305 and 700 in my firebird with this. the engine is easy, but the trans i'm not shure of. It is a 4L60E and I have no idea how to make the electronic trans work without a computer. can enyone help??
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: need auto trans help
You can't make it work without a computer of some sort. Either the original PCM, or aftermarket.
Thread Starter
Junior Member
Joined: Mar 2009
Posts: 52
Likes: 0
From: sioux lookout ON. Canada
Car: 83 firebird
Engine: 350
Transmission: 700
Axle/Gears: 3.23
Re: need auto trans help
I suppose I could take the computer and harness from the truck. I thought I had once seen an add for an aftermarket unit for that but cant remember who was selling it.
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: need auto trans help
Taking the stock computer is all-or-nothing. You'd have to bring over the complete computer, all the sensors, induction system, injectors, etc.
TCI makes the cheapest controller, it's about $600. Hughes has one for $1500.
TCI makes the cheapest controller, it's about $600. Hughes has one for $1500.
Thread Starter
Junior Member
Joined: Mar 2009
Posts: 52
Likes: 0
From: sioux lookout ON. Canada
Car: 83 firebird
Engine: 350
Transmission: 700
Axle/Gears: 3.23
Re: need auto trans help
is it posible to make the thing full manual shifting? $600 is going to be tough to get by the wife after spending $1000 on a used truck just to get the engine + trans. cash is tight these days. She can't see why I need a new engine + trans when she is out driving our 2010 camaro.
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: need auto trans help
You can do manual shifting... with a computer. 
Just sell or trade the 4L60E and get a 4L60.

Just sell or trade the 4L60E and get a 4L60.
Thread Starter
Junior Member
Joined: Mar 2009
Posts: 52
Likes: 0
From: sioux lookout ON. Canada
Car: 83 firebird
Engine: 350
Transmission: 700
Axle/Gears: 3.23
Re: need auto trans help
thats what will have to happen. Use the money from parting out the truck to rebuild the 700r. thanks
Thread
Thread Starter
Forum
Replies
Last Post
84z96L31vortec
Tech / General Engine
7
Aug 20, 2017 12:16 AM
smokingss
LSX and LTX Parts
2
Mar 3, 2016 07:40 PM
84z96L31vortec
North East Region
1
Aug 10, 2015 08:27 PM




