mate a T5 to a np231 -
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Unread 10-25-2001, 07:50 PM   #1
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Join Date: Sep 2001
Location: FL
Posts: 162
mate a T5 to a np231

I am want to upgrade my 4.2 to the 4.0 heads. With this power gain, I want a new tranny and I have heard mostly good things about the t5. 4wd Hardware has a kit to bolt it on to my 88 YJ. Would this also bolt right on to my existing 231? I have a slipyoke eliminator on it, so I don't want to get rid of it. Would i have to alter the driveshaft or not? Thanks for any input


95 YJ 2.5L 5 Speed

Fightin a war against Florida Rust!
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Unread 10-25-2001, 08:25 PM   #2
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1995 YJ Wrangler 
Join Date: Nov 2000
Location: Santee, CA U.S.A.
Posts: 1,148
I don't know where you ever heard good things about a T5. In CJ7 circles, which has the T5 stock, it's considered junk. Even the World Class T5 is not considered a "great" tranny. Looks to me like Advanced Adapters is recommending the NV3550 as a good swap for the Peugeot. I think even the AX15 would be a better choice than the T5. Here's AA's writeup if you can handle pdf files.
Matt Osburn
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Unread 04-16-2014, 09:08 PM   #3
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Good transmission or not... Does anyone know the answer to this?

sirhk100 is online now   Reply With Quote Quick reply to this message
Unread 04-16-2014, 09:13 PM   #4
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1989 YJ Wrangler 
Join Date: Dec 2011
Location: , San Angeles
Posts: 797
why does your sig say 2.5L if you're talking about 4.2L and 4.0L head?
'89 YJ, 4.2L, ax-15, B&M shifter, 1" BL, TJ flares, '99 intake, '91 EFI, 5.0L explorer injectors, GenRight tank & stretch, 35" ProComp Xtreme muds, 52" chevy springs rear, 44044 Ranchos front.....
YJ4LIFE is offline   Reply With Quote Quick reply to this message

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