What Tranny

Bear Chow · 04-17-2007, 02:05 PM

What auto tranny is in my 1989 4wd 1 ton SRW w/454? It seems to be leaking at the output seal. I was unable to locate a data plate on it. I kinda of assumed it was a TH400 but than I was told today that being a 1989 it may not be.

Thanks

Paul

carwash · 04-17-2007, 02:22 PM

my guess would have been the 400. does it have an overdrive on it? Could be a 700r4 i guess.

JeffK5 · 04-17-2007, 04:24 PM

If it's a 4 sp. then it's a L480E , 3sp then th400

KargoMaster · 04-17-2007, 05:12 PM

Quote:

Originally Posted by JeffK5

If it's a 4 sp. then it's a L480E , 3sp then th400

Or a 4L80E...

the bigger, beefier brother to the 4L60E in my DD...

I didn't realize that the "80" was that old...

JeffK5 · 04-17-2007, 07:20 PM

Quote:

Originally Posted by KargoMaster

Or a 4L80E...

the bigger, beefier brother to the 4L60E in my DD...

I didn't realize that the "80" was that old...

Dyslexia my family in runs!

KargoMaster · 04-18-2007, 12:33 AM

Ok, so now I'm curious... I know that the 4L60E is just an "E" version of the 700R4... Anyone know if there was a predecessor to the 4L80E???

sarge · 04-18-2007, 01:28 AM

my 90 big block suburban had a 400 in it . I too did not think that a 4L80E was even on the planet in 1989 ????? 700r4 yes ,,,, but not a 4L80 on a Gen II motor. but i have been wrong a couple times in my life .

Forget it ... I just reread the post .... I'm the idiot now !!!

The 4L80 E is just a beefed up 4L60E , same case , same valve body just much stronger guts. GM runs them behind the 6.0 and 8.1 gas motors . Mommas Denali has the 80 in it .

blazerbrad · 04-19-2007, 08:42 AM

Yeah, yeah, this is kinda' nit-picky...but technically the 4L80E is a TH400 with overdrive and electronic controls. It shares very little or no parts with a 4L60E.

The only predecessor to the 4L80E was the TH400. There was no non-"E" (electronic) 4L80 that I am aware of...they went straigt from the 3-speed TH400 to the 4L80E.

I thought the first year of the 4L80E was '91. They were available in that year for the old body styles that were carried over in the 'burb and a few of the heavier duty pickups, but not 100% sure about the new body style trucks.

04-17-2007, 02:05 PM	#1
Bear Chow Jeepless Join Date: Feb 2007 Location: Oxford, Oh Posts: 302	What Tranny What auto tranny is in my 1989 4wd 1 ton SRW w/454? It seems to be leaking at the output seal. I was unable to locate a data plate on it. I kinda of assumed it was a TH400 but than I was told today that being a 1989 it may not be. Thanks Paul

04-17-2007, 02:22 PM	#2
carwash pimpin' IS easy Join Date: Jan 2007 Location: Union, KY Posts: 3,344 Images: 605	my guess would have been the 400. does it have an overdrive on it? Could be a 700r4 i guess. __________________

04-18-2007, 12:33 AM	#6
KargoMaster Cleaning off the rust... Join Date: Jan 2007 Location: Cincinnati, OH Posts: 1,009	Ok, so now I'm curious... I know that the 4L60E is just an "E" version of the 700R4... Anyone know if there was a predecessor to the 4L80E??? __________________ brad 5.0L \| 435 \| 203 \| 300 \| 4.10 \| 39.5 Buildup BACK underway...

04-18-2007, 01:28 AM	#7
sarge Pure Bacon Join Date: Jan 2007 Location: Trenton, Oh Posts: 1,098	my 90 big block suburban had a 400 in it . I too did not think that a 4L80E was even on the planet in 1989 ????? 700r4 yes ,,,, but not a 4L80 on a Gen II motor. but i have been wrong a couple times in my life . Forget it ... I just reread the post .... I'm the idiot now !!! The 4L80 E is just a beefed up 4L60E , same case , same valve body just much stronger guts. GM runs them behind the 6.0 and 8.1 gas motors . Mommas Denali has the 80 in it . Last edited by sarge; 04-18-2007 at 01:34 AM.

04-17-2007, 04:24 PM	#3
JeffK5 Tiny Member Join Date: Jan 2007 Location: Colerain Posts: 798	If it's a 4 sp. then it's a L480E , 3sp then th400

04-19-2007, 08:42 AM	#8
blazerbrad - CORE Member - Join Date: Feb 2007 Posts: 831 Images: 6	Yeah, yeah, this is kinda' nit-picky...but technically the 4L80E is a TH400 with overdrive and electronic controls. It shares very little or no parts with a 4L60E. The only predecessor to the 4L80E was the TH400. There was no non-"E" (electronic) 4L80 that I am aware of...they went straigt from the 3-speed TH400 to the 4L80E. I thought the first year of the 4L80E was '91. They were available in that year for the old body styles that were carried over in the 'burb and a few of the heavier duty pickups, but not 100% sure about the new body style trucks.