th400 2wd to 4wd - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mainermikeyd · 05-20-2009, 08:12 PM

OK got a 2wd driver TH400 in a 2wd crew cab, lookin to see what I need to look for to see if I can use it in a 4x4, preferably a NP205?? Any suggestions, anyone done this swap??

mainermikeyd · 05-20-2009, 08:23 PM

Forgot to say it's a 86 TH400 currently mated to a 454

Damien · 05-20-2009, 10:10 PM

You need a TH400 version of a NP205 for starters. The input spline count is different for the two versions np205. Other then that, It comes to the length of the output shaft of the trans. and I'm not sure what that needs to be.

asphaltburner · 05-20-2009, 11:17 PM

Yo! mainermikeyd!
Not that in particular, but TH400/NP203 to TH400/NP205. "I have people,..." (I still have record of my sources that could get you set up for sure!).
Here's some pics of the TH400/NP205 in the body of my FRANKENTRUCK build thread (about post #25):
http://67-72chevytrucks.com/vboard/s...d.php?t=301610
PM, or email, me. I'll dig out the info on my sources.
Todd.

Todd.

ghettoluxury · 05-22-2009, 06:20 PM

Quote:

Originally Posted by mainermikeyd

OK got a 2wd driver TH400 in a 2wd crew cab, lookin to see what I need to look for to see if I can use it in a 4x4, preferably a NP205?? Any suggestions, anyone done this swap??

you will need a 32 spline 205 and the adapter for the TH400, it will bolt right up to your 2wd TH400 this is what I have used for years due the fact 2wd trannys are easier to find.

05-20-2009, 08:12 PM	#1
mainermikeyd Registered User Join Date: Sep 2008 Location: Limington, ME Posts: 290	th400 2wd to 4wd OK got a 2wd driver TH400 in a 2wd crew cab, lookin to see what I need to look for to see if I can use it in a 4x4, preferably a NP205?? Any suggestions, anyone done this swap?? __________________ Once a Marine Always a Marine OOH-RAH GM Fanatic 1982 K20 4" Rancho lift 350cid, edelbrock performer intake 1405 carb, hedman headers, TH350, " Wheres the MUD!!!!!!!!!!" 1986 c30 camper special 454, th400 (for sale) 1984 K10 Big Ten (project) needs motor 1984 C10 355, 700r4, (project) needs shortbox bed

05-20-2009, 10:10 PM	#3
Damien Registered User Join Date: Mar 2007 Location: Farmington, MN Posts: 928	Re: th400 2wd to 4wd You need a TH400 version of a NP205 for starters. The input spline count is different for the two versions np205. Other then that, It comes to the length of the output shaft of the trans. and I'm not sure what that needs to be. __________________ I can still count my vehicles on two... wait three hands.

05-20-2009, 11:17 PM	#4
asphaltburner Registered User Join Date: Jul 2008 Location: Ault, Colorado Posts: 862	Re: th400 2wd to 4wd Yo! mainermikeyd! Not that in particular, but TH400/NP203 to TH400/NP205. "I have people,..." (I still have record of my sources that could get you set up for sure!). Here's some pics of the TH400/NP205 in the body of my FRANKENTRUCK build thread (about post #25): http://67-72chevytrucks.com/vboard/s...d.php?t=301610 PM, or email, me. I'll dig out the info on my sources. Todd. Todd. __________________ '78 3/4 ton 4x4 custom "Todd-built" FRANKENTRUCK!

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05-20-2009, 08:23 PM	#2
mainermikeyd Registered User Join Date: Sep 2008 Location: Limington, ME Posts: 290	Re: th400 2wd to 4wd Forgot to say it's a 86 TH400 currently mated to a 454 __________________ Once a Marine Always a Marine OOH-RAH GM Fanatic 1982 K20 4" Rancho lift 350cid, edelbrock performer intake 1405 carb, hedman headers, TH350, " Wheres the MUD!!!!!!!!!!" 1986 c30 camper special 454, th400 (for sale) 1984 K10 Big Ten (project) needs motor 1984 C10 355, 700r4, (project) needs shortbox bed



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