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Old 05-25-2009, 06:59 AM   #1 (permalink)
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'94 suburban 1500- which tcase?

my bud needs a new tcase. its a '94 suburban 1500. before we go hunt one down, i did a little research and found that there were two different types- the 4L60E and the 4L80E.

what is the difference?

thanks a bunch.
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Old 05-25-2009, 07:38 AM   #2 (permalink)
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Well the 4L60E is 16 bolt pan and the 4L80E is a 17 bolt pan if that helps. The 4L60 pan is more rectangular than the square 4L80.

4L80E


4L60E


Search brought the good info..

http://www.pirate4x4.com/forum/archi...p/t-63584.html
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Old 05-25-2009, 11:13 AM   #3 (permalink)
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A K1500 will probably have the 4L60E in it with a NP 241 drivers drop t-case. Look on the back of the old t-case, it has a round metal tag screwed into it that has the model number and low range ratio stamped on the tag.

Should have NP-241 and 2.72-1 stamped on the tag.
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Old 05-25-2009, 03:12 PM   #4 (permalink)
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thanks a bunch guys. if we were to swap out cases, would it matter which one we got? does either one have a lower 4lo or anything?

i don't know which one he has yet, but i guess what i'm asking is can they be interchanged, and is one better than the other?


edit- nevermind, i found the info. looks like we are going to want to do a direct swap. thanks again!
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thats right... a NISSAN!
DON'T JUST STARE AT IT- EAT IT!
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You should have licked her asshole.

Last edited by roastbeef; 05-25-2009 at 03:47 PM.
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Old 05-27-2009, 09:27 AM   #5 (permalink)
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Just keep in mind you don't want to run a 4L60 computer on a 4L80 transmission so keep that in mind if you swap them.
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