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 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-12-2018, 01:12 PM   #1
Tonner
Registered User
 
Join Date: Apr 2015
Location: Spokane, Washington
Posts: 36
Transmission line fittings

I have a '72 C20 with a TH350 transmission. I bought it in pieces, so I never saw the transmission cooler lines connected. Both ends of both lines have flared ends and fittings. One of the flare fittings on the transmission end is screwed into a separate brass adapter with the same size threads and a flat end. Of the four ends, it's the only one and there are none in the bolt bags I received with the truck. Is the adapter supposed to be there? Should both lines have one? Should both lines have two? What is the adapter called and where do I get more? I tried threading them all in as-is, but the non-adapter line leaks from the transmission end. All appeared to tighten just fine.
Tonner is offline   Reply With Quote
Old 06-12-2018, 01:35 PM   #2
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 9,715
Re: Transmission line fittings

Some info here on what you need.

http://www.v8s10.org/forum/viewtopic.php?f=19&t=37197
geezer#99 is online now   Reply With Quote
Old 06-13-2018, 12:32 AM   #3
67c10rustbuket
Registered User
 
67c10rustbuket's Avatar
 
Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
Re: Transmission line fittings

Each port on the transmission should have a brass adapter 1/4 NPSM X whatever inverted flare. Just go to your local dealer and buy one or two if you are missing them. Part number 8637742, I just bought two myself last week. Cost about $7 each from GM.
Attached Images
 
__________________
Dan <---(my name)



67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car
67c10rustbuket is offline   Reply With Quote
Old 06-13-2018, 01:11 AM   #4
chewychevy67
Senior Member
 
Join Date: Jan 2010
Location: Up here
Posts: 3,786
Re: Transmission line fittings

I too just had my transmission rebuilt but these were not on the tirbo 400 so I found some. Are they supposed to have a brass washer between them and the transmission aluminum body or will they seal up when without the washers?
__________________
My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=530401
chewychevy67 is offline   Reply With Quote
Old 06-14-2018, 01:41 AM   #5
Tonner
Registered User
 
Join Date: Apr 2015
Location: Spokane, Washington
Posts: 36
Re: Transmission line fittings

Man, none of the local parts houses had them. Napa said it was a special order item that would cost ten bucks plus UPS freight. O'Reilly's said they couldn't get it even though I read them the part number off their own website. I finally contacted the local hydraulics supply store and the carried them.
Tonner is offline   Reply With Quote
Old 06-14-2018, 07:47 AM   #6
ga-stepside
Active Member
 
ga-stepside's Avatar
 
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 196
Re: Transmission line fittings

Type gm 8637742 into EBay search.
__________________
1967 C10 Step side
1970 AMX 390
1977 Datsun 280Z highly modified with '95 LT1 power
ga-stepside is offline   Reply With Quote
Old 06-14-2018, 09:32 AM   #7
67c10rustbuket
Registered User
 
67c10rustbuket's Avatar
 
Join Date: Apr 2011
Location: Mustang, Oklahoma
Posts: 2,806
Re: Transmission line fittings

You can buy these at any GM dealership parts department. If they’re not in stock they can get them next day. If you don’t have a GM dealer close I think Jegs and summit sell them too.
__________________
Dan <---(my name)



67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car
67c10rustbuket is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 09:52 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com