Needed a diff, coming home with a 90 R20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jsfucttruck · 01-09-2018, 08:24 PM

Quote:

Originally Posted by Ski-me

Isn't 91 the only year of the 4l80e tranny? 2wd and/or 4wd? I didn't think it was available in 89-90....just TH400.

I thought the same.
It has a 1990 production date, and the build code calls for it.

I am looking at buying a 91 V2500 for parts, that has a th400, I thought all the 3/4 tons in 91 had 4L80e's!

Jsfucttruck · 01-09-2018, 08:47 PM

Current line up...

Ski-me · 01-10-2018, 02:36 PM

Quote:

Originally Posted by Jsfucttruck

I thought the same.
It has a 1990 production date, and the build code calls for it.

I am looking at buying a 91 V2500 for parts, that has a th400, I thought all the 3/4 tons in 91 had 4L80e's!

Unless someone swapped it out.....

By factory, I'd expect to see all 3/4 ton suburbans with a 3 speed shifter. In 91 I'd expect to see the "OD" 4th gear on selector (4l80e).

68Timber · 01-10-2018, 03:11 PM

The 4L80E could have been an option with TH400 standard issue like the 700R4 was to the TH350 back then.

01-09-2018, 08:47 PM	#2
Jsfucttruck Registered User Join Date: Jul 2011 Location: Aptos Posts: 363	Re: Needed a diff, coming home with a 90 R20 Current line up... Attached Images Last edited by Jsfucttruck; 01-11-2018 at 06:07 AM.

01-10-2018, 03:11 PM	#4
68Timber I know the pieces fit Join Date: Nov 2007 Location: MONTGOMERY, AL Posts: 5,523	Re: Needed a diff, coming home with a 90 R20 The 4L80E could have been an option with TH400 standard issue like the 700R4 was to the TH350 back then. __________________ John 79 2wd Blazer (Bruiser) 85 M1009 Blazer (Sarge) build 74 Honda Z50 build



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