4L80e
Thread Starter
Joined: Jun 2001
Posts: 8,028
Likes: 93
From: DC Metro Area
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
4L80e
Has anyone managed to shoehorn one into a 3rd gen? Does it clear the tranny tunnel? What did you do for a converter and for the shift/TC control?
With the converters, I've had ATI tell me that the '91-97 tranny used the same converter as a 700r4 and it's not a problem, but everyone else keeps insisting that they are different. I'm tempted to believe ATI, but since it's one company that I trust and have dealt with before multiple times vs _everyone_ else I've talked to, I'm starting to wonder.
With the converters, I've had ATI tell me that the '91-97 tranny used the same converter as a 700r4 and it's not a problem, but everyone else keeps insisting that they are different. I'm tempted to believe ATI, but since it's one company that I trust and have dealt with before multiple times vs _everyone_ else I've talked to, I'm starting to wonder.
Joined: Jan 2005
Posts: 10,412
Likes: 493
From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
93-97 4L60E typically will use the same converter as a 700r4. The 4L80E is a totally different animal.
Supreme Member
iTrader: (3)
Joined: Sep 2005
Posts: 1,685
Likes: 3
From: MD
Car: '88 IROC-Z medium orange metallic
Engine: L98
Transmission: 700R4
Axle/Gears: 3.27
Use the stand alone TCI trans controller to contol the 80. I've done a couple swaps into LS1 cars and it isn't that bad and they're close to a thirdgen so you shouldn't have to cut too much 
The later 700's with a PWM pump are the same as the 60E's but as stated, the 80's are different.

The later 700's with a PWM pump are the same as the 60E's but as stated, the 80's are different.
Thread Starter
Joined: Jun 2001
Posts: 8,028
Likes: 93
From: DC Metro Area
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
so do you think it will fit without major changes?
The TCI box/T-Com is my current top choice for controlling the thing.
The TCI box/T-Com is my current top choice for controlling the thing.
Senior Member
Joined: Nov 2002
Posts: 507
Likes: 1
From: Triangle NC
Car: 82 Ponitac Firebird
Engine: 350 TPI
Transmission: 4L60e/TCI TCU
Axle/Gears: 2.73
Hi,
I'm in process of gathering parts to intall a 4L60e transmission into my 1982 Firebird. I have in the past few days ordered the TCI TCU controller from SummitRacing. I have compared the price of the TCU from sevral different sources and SummitRacing has the best price. FYI, the transmission controller sold by GM-Parts is repackaged TCI TCU controller.
I'm in process of gathering parts to intall a 4L60e transmission into my 1982 Firebird. I have in the past few days ordered the TCI TCU controller from SummitRacing. I have compared the price of the TCU from sevral different sources and SummitRacing has the best price. FYI, the transmission controller sold by GM-Parts is repackaged TCI TCU controller.
Thread
Thread Starter
Forum
Replies
Last Post
ZZ3Astro
Power Adders
1045
Aug 13, 2019 12:57 AM
Vortex91
Transmissions and Drivetrain
6
Jul 19, 2007 08:28 PM









