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Old 04-16-2015, 04:57 PM   #1
87Skier
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TH350 to 700r4 swap

Well, because I can't just leave my stuff alone and the engine feels pretty gutless from a stop I'm already planning on swapping in a 700r4 and changing out the front/rear diff.

I know its about 3" longer, so what have you guys done? Engine forward, or transfer case back? How did that work out?
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Old 04-16-2015, 06:37 PM   #2
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Re: TH350 to 700r4 swap

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Originally Posted by 87Skier View Post
Well, because I can't just leave my stuff alone and the engine feels pretty gutless from a stop I'm already planning on swapping in a 700r4 and changing out the front/rear diff.

I know its about 3" longer, so what have you guys done? Engine forward, or transfer case back? How did that work out?
Engine forward is the best, no fooling with the driveshaft lenghts
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Old 04-17-2015, 08:46 PM   #3
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Re: TH350 to 700r4 swap

I'm with Jim, I moved the engine 2" forward then used the Advanced Adapter 1 3/4" spacer to mate the 205. I relocated the transfer case support 1 3/4" back. I have a 2 1/2" lift and a 14 bolt rear and had to set the pinion angle so I moved the rear back 1" to center the wheel in the wheel well. I can still run the stock drive shafts but I set the pinion for a CV shaft from Tom Woods.





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Old 04-17-2015, 09:18 PM   #4
elkniks
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Re: TH350 to 700r4 swap

Everytime someone calls your Blazer a Bronco, God kills a kitten.

HAAAAAAAAA! I really did laugh out loud when I read that. How many times have you looked at someone who just called your truck a Bronco and had to count to 10.
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Old 04-22-2015, 12:17 PM   #5
IwantaK5
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Re: TH350 to 700r4 swap

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Originally Posted by warbucket View Post
I'm with Jim, I moved the engine 2" forward then used the Advanced Adapter 1 3/4" spacer to mate the 205. I relocated the transfer case support 1 3/4" back. I have a 2 1/2" lift and a 14 bolt rear and had to set the pinion angle so I moved the rear back 1" to center the wheel in the wheel well. I can still run the stock drive shafts but I set the pinion for a CV shaft from Tom Woods.

Is your trans a 700r4? I did the same trans swap and i didnt need any spacer. Just the proper output shaft from AA.
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Old 04-22-2015, 10:00 PM   #6
warbucket
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Re: TH350 to 700r4 swap

yes, 700r4, the trans I had was already rebuilt and I didn't want to send it out to change the shaft so I took the cheaper option.
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Old 04-23-2015, 11:27 AM   #7
87Skier
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Re: TH350 to 700r4 swap

That was going to be my next question! I have a broken 4L60E on my garage floor right now and the only difference I can spot in dimensions is the output shaft.

So I can pickup a shaft for a 700R4, put that in and will directly bolt in place of a TH350, or it still slightly longer? Either way, the engine will be going forward. Sure would be nice to actually be able get to the distributor.
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