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04-13-2020, 09:41 PM
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#1 |
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Registered User
Join Date: May 2013
Location: Catawba Island, OH
Posts: 203
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TH350 to 700R Swap?
I've a 1970 C20 with a stock 350cc and TH350 Transmission.
My Transmission recently went out and I'm looking for options vs. rebuilding. Would this 700r4 be able to replace my TH350? I see this one has a transfer case and I am asking if I could remove this and bolt up my TH350 Tail Housing in its place. Also, would that deeper pan fit under my truck? The Cross Member? I'm looking for the chance to skip rebuilding my TH350 and move into the 4 Speed. Am I completely off the reservation or have I maybe found what I need within 20 min drive? Please forgive me if I'm foolish as this is the least understood part of the drive train in my mind. Please refer to photos from my friend, the local owner. |
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04-13-2020, 09:48 PM
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#2 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: TH350 to 700R Swap?
No, that won't just bolt in place but it looks like a desirable setup for the 4WD guy
__________________
My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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04-13-2020, 10:25 PM
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#3 |
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Registered User
Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,144
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Re: TH350 to 700R Swap?
Yep, the output shaft on the 700r4 4x4 trans is different than a 2wd version. You CAN change the output shaft but that requires trans disassembly. Swapping in a 2wd 700r4 is a fairly simple swap, probably a trans x-member move (the mount is a couple inches difference), if you currently have a 9" tailshaft on the th350 the driveshaft length remains the same, and a little wiring to control the lockup.
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04-13-2020, 11:04 PM
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#4 |
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Senior Member
  
Join Date: Sep 2008
Location: Harrison, Arkansas
Posts: 9,863
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Re: TH350 to 700R Swap?
Somebody here would love to have that setup for a 4x4 because the transfer driveshaft is on the passenger side.
__________________
other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. |
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04-14-2020, 07:14 AM
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#5 |
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Registered User
Join Date: May 2013
Location: Catawba Island, OH
Posts: 203
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Re: TH350 to 700R Swap?
Thanks fellas.
Most informative. Obviously, I'll be passing on this one. If anyone is interested, search FB Marketplace. It's in Bellevue, Ohio. |
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