700r4 to th400 swap - 4Wheel & Off-Road Forums at 4Wheel & Off-Road Magazine 4-Wheel & Off-Road

700r4 to th400 swap

  
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700r4 to th400 swap

 
tazman5569 tazman5569
New User | Posts: 1 | Joined: 11/03
Posted: 11/23/03
02:13 PM

i want to swap out 700-r4 for th400,in a 90 suburban 4x4,what do i need to change?i know the trans are bolt in replacement what about the transfercase, i need a output shaft gear from a 241c that had a th400 ,what else?  

 
guidolyons guidolyons
Enthusiast | Posts: 365 | Joined: 11/03
Posted: 11/29/03
06:58 PM

Why do you want to ditch the 700R4? It has a great first gear and overdrive too, Some years weren't so good, but you can get it rebuilt with an extra clutchband and I think a Corvette servo is recommended for better shifting. It might be better than swapping a TH400  

 

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