TH350-700R4 - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 10-05-2000, 02:16 PM
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TH350-700R4

My 700r4 is dead. I have a TH350 that I would like to put in until the 700R4 can be rebuilt. Will the TH350 bolt up to the NP208 transfer case? Other than driveshaft length and crossmembers, am I going to run into any problems?

Double 0
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post #2 of (permalink) Old 10-05-2000, 02:30 PM
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Re: TH350-700R4

The TH350 is a couple inches shorter than the TH350 so the rear driveshaft will likely have to be lengthened. As for bolting a TH350 onto an NP208, it can probably be done with the right adapter plate. Other than that, you probably won't have any problems but be sure to change out the torque converter to the one for the TH350 when you change trannys.

<font color=red>TOO MUCH POWER</font color=red> isn't enough.
post #3 of (permalink) Old 10-06-2000, 12:58 PM
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Re: TH350-700R4

Double0 just a quick question...Why would you want to switch back to the 700R4? A turbo350 is a much better tranny..the only bad thing about keeping the 350 is your gas milage will drop because its only a 3 speed...I personally wouldnt dump any money into a 700R4 when you have a turbo350 all ready to go and its a much better tranny then a R4 I would throw a shift kit in it and use it..then junk the R4 because its a true piece of crap -)

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post #4 of (permalink) Old 10-06-2000, 01:25 PM
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Re: TH350-700R4

Not all 700-R4s are bad. Only when GM first introduced them they sucked, but by the late 80's they had most of the flaws worked out, everyone is stuck on the first impression of the first 700-R4's I have one in my 89 and it works wonderful, 156k and the tranny fluid has been only changed once, and still going strong!

post #5 of (permalink) Old 10-06-2000, 07:28 PM
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Re: TH350-700R4

I overhauled mine in my '87, using Corvette clutches, and the like, and I really like mine! It doesn't cost that much to go first class! In what you will spend in a adapter, and lengthing your drive shaft, you will more than make up the price difference in rebuilding your tranny to Corvette specs! Just my 02 cents worth!

[img]/wwwthreads_images/icons/cool.gif[/img] '87 Chevy 1/2t SWB in the making!
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