The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-24-2019, 10:52 AM   #1
WyattTX
Registered User
 
Join Date: Nov 2015
Location: Down south
Posts: 518
700r4 swap from one '85 C10 to another: What do I need to take off of the donor?

I've acquired a rusted out 85 c10 Suburban with a 700r4 in it. I intend to swap this transmission into my TH350 equipped '85 C10 pickup. What 700r4 specific parts are needed to be removed from the Suburban to be installed on the pickup? Thanks.
WyattTX is offline   Reply With Quote
Old 09-25-2019, 11:25 AM   #2
Dannyboy1966
Registered User
 
Dannyboy1966's Avatar
 
Join Date: Nov 2014
Location: KANSAS CITY
Posts: 100
Re: 700r4 swap from one '85 C10 to another: What do I need to take off of the donor?

Quote:
Originally Posted by WyattTX View Post
I've acquired a rusted out 85 c10 Suburban with a 700r4 in it. I intend to swap this transmission into my TH350 equipped '85 C10 pickup. What 700r4 specific parts are needed to be removed from the Suburban to be installed on the pickup? Thanks.
You will need to have the wiring, brake light switch, and low vacuum switch from under the hood by the brake booster, in order to make the lock up torque converter work correctly. I would also invest in a new TV cable the old one is probably stretched out a bit, and a new one is fairly cheap. As for the drive shaft length, if your TH350 had a 9 inch tail shaft you should be okay it's only a 5/8 inch difference in length for the transmissions. If you have a short tail shaft on the 350 grab the drive shaft off the Suburban.
Dannyboy1966 is offline   Reply With Quote
Old 09-25-2019, 03:59 PM   #3
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,477
Re: 700r4 swap from one '85 C10 to another: What do I need to take off of the donor?

Any throttle bracket magic bits needed to hold the TV cable.
The shift indicator from the dash cluster.
Possibly the cooling lines.
Drive shaft + yoke, just in case.
Transmission support, just in case.
Dead Parrot is offline   Reply With Quote
Old 09-25-2019, 07:05 PM   #4
WyattTX
Registered User
 
Join Date: Nov 2015
Location: Down south
Posts: 518
Re: 700r4 swap from one '85 C10 to another: What do I need to take off of the donor?

Thanks, I guess I'll just grab the whole carb, to be safe about the TV cable linkage. If I were to ever switch to a fuel injection system like Fitech, are there adapters out there to make the TV cable work with it?
WyattTX is offline   Reply With Quote
Old 09-27-2019, 08:08 PM   #5
Dannyboy1966
Registered User
 
Dannyboy1966's Avatar
 
Join Date: Nov 2014
Location: KANSAS CITY
Posts: 100
Re: 700r4 swap from one '85 C10 to another: What do I need to take off of the donor?

Quote:
Originally Posted by WyattTX View Post
Thanks, I guess I'll just grab the whole carb, to be safe about the TV cable linkage. If I were to ever switch to a fuel injection system like Fitech, are there adapters out there to make the TV cable work with it?
Yes there is a bracket. I believe it's the same set up they use for the Holley carbs. Fitech's website can tell you.
Dannyboy1966 is offline   Reply With Quote
Old 09-27-2019, 08:16 PM   #6
Dannyboy1966
Registered User
 
Dannyboy1966's Avatar
 
Join Date: Nov 2014
Location: KANSAS CITY
Posts: 100
Re: 700r4 swap from one '85 C10 to another: What do I need to take off of the donor?

Quote:
Originally Posted by Dead Parrot View Post
Any throttle bracket magic bits needed to hold the TV cable.
The shift indicator from the dash cluster.
Possibly the cooling lines.
Drive shaft + yoke, just in case.
Transmission support, just in case.
Drive shaft yoke, and cooling lines are the same for both. He just needs to make sure he gets a spray can of Kooler Kleen, and flush the cooler out. The shift indicator in the dash is cheap enough to buy new from LMC or Classic. I just got one this spring for $25
Dannyboy1966 is offline   Reply With Quote
Old 09-27-2019, 10:53 PM   #7
WyattTX
Registered User
 
Join Date: Nov 2015
Location: Down south
Posts: 518
Re: 700r4 swap from one '85 C10 to another: What do I need to take off of the donor?

I believe I've got just about everything now, even the dash indicator. I'll post a thread if the swap commences thanks for the help, everyone.
WyattTX is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:56 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com