73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 77chevyshortbox on May 17, 2011, 09:15:20 pm

Title: th400
Post by: 77chevyshortbox on May 17, 2011, 09:15:20 pm

I've got a th400 with a np208, and a np205 of a th400. I have the adaptor bracket for the th400/205. would of had the tranny to, but was in rough shape so settled for another th400. anyways i wanna bolt the np205 upto the th400 that had the np208, only question i have is do i need to do anything else or is the adaptor enough? had someone say tailshaft needs to be changed due to length issues or spline. not sure any input helps.

Title: Re: th400
Post by: Irish_Alley on May 17, 2011, 09:52:30 pm

It does come with two shafts since you don’t have both transmissions i don’t think you can tell the difference. The difference between the two is only 1 5/8"

Title: Re: th400
Post by: Irish_Alley on May 17, 2011, 09:53:54 pm

http://www.4wheeloffroad.com/techarticles/drivetrain/131_0612_th400_transmission_build/photo_04.html
this is the 203/205


http://forums.off-road.com/jeepster-american-jeepster-club/205310-th400-output-shaft-length.html
Jeepster 400 = 4 1/2"
400 to 203 = 1 3/8", 1.1" adapter
400 to 208 = 2 1/2"
400 to 205 = 4 1/2"

Title: Re: th400
Post by: 77chevyshortbox on May 17, 2011, 10:36:53 pm

so basically figure out which shaft and spline count i have and if it doesnt match the 205, i should steal the one off the other tranny? hah

Title: Re: th400
Post by: Irish_Alley on May 18, 2011, 10:09:42 am

the splin count should be the same

Title: Re: th400
Post by: 77chevyshortbox on May 18, 2011, 11:06:27 am

beautiful thanks for the info