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Old 01-09-2018, 08:24 PM   #21
Jsfucttruck
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Join Date: Jul 2011
Location: Aptos
Posts: 363
Re: Needed a diff, coming home with a 90 R20

Quote:
Originally Posted by Ski-me View Post
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!
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