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 03-20-2017, 02:42 PM   #1
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 2,431
Original coolant expansion tank install

Apparently these were dealer installed. Some factory, which MAY be limited to govt. trucks. I'm guessing they were dealer installed varying on State requirements.

Anyway, I wanted to sample fit one onto my core support. This is my "bad" tank. Pretty sure I have a recipe for that stain. Anyway, below are the instructions. The way I read it the top mounting hole is 8.5/8" higher than the horn hole. Well, I dropped it near 1/2", because I wanted it below the ridge on the core support. Contributed to that, the instructions call for a 3/8" tilt. I don't know, I prefer things upright, though 3/8" isn't that noticeable. The tilt provides added clearance and it's more or less consistent with the slope in the top of the core support. That and you can bend the bracket.

There's not much clearance between the port in the tank and the low horn. Maybe 1.25"........It would work fine as is, though the hose may rest on the horn. I don't want any pressure on that port, and there's a lot of real estate on the LH side, especially without a voltage regulator. So I'm making a 4x4ish" plate as an option, probably aluminum. That will add up to 2" more clearance to the left, and really, more clearance in every direction. Very little of the plate will be visible, if at all.

Not exactly rocket science, but glad to have finally figured it out so I can pull the radiator. Zepplin was real helpful.................BTW, free 4-core radiator un-shipped. It's not truck correct, but it works less the port for a heater hose on a BBC........Doesn't fit the shroud.








__________________
Tony

With every bolt I learn something new. While frustrating at times this is a blast. I can see why you guys dig it, never mind the coolest trucks on Earth.
71 Custom Deluxe, SWB, fleet, C10, 402, A/C. A.K.A. money pit
72 Cheyenne Super, LWB, fleet, C20, 402, A/C. A.K.A. former sacrificial worship to money pit become just another money pit and donor truck.
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 03-20-2017, 03:45 PM   #2
Reggler
Registered User
 
Join Date: Aug 2016
Location: Brunswick, Ohio
Posts: 17
Re: Original coolant expansion tank install

My '72 suburban has one of these. But it was also built with the heavy duty cooling. I feel like that is properly placed because I know it's in a weird spot to try to fill with a 1 gal antifreeze jug.
Reggler is offline   Reply With Quote
Old 03-20-2017, 04:33 PM   #3
saskred
Junior Member
 
saskred's Avatar
 
Join Date: Jun 2015
Location: San Antonio, TX
Posts: 42
Re: Original coolant expansion tank install

Anyone know where the overflow tank is supposed to be installed when an auxiliary battery is already installed?
__________________
-
www.vintagecorrect.com
saskred is offline   Reply With Quote
Old 03-20-2017, 06:43 PM   #4
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 2,431
Re: Original coolant expansion tank install

Quote:
Originally Posted by saskred View Post
Anyone know where the overflow tank is supposed to be installed when an auxiliary battery is already installed?
Nope. But I know at least one dealer sells one that sits on the RH inner fender with a "factory appearance"........I think Wes has these, Classic Heartbeat.
__________________
Tony

With every bolt I learn something new. While frustrating at times this is a blast. I can see why you guys dig it, never mind the coolest trucks on Earth.
71 Custom Deluxe, SWB, fleet, C10, 402, A/C. A.K.A. money pit
72 Cheyenne Super, LWB, fleet, C20, 402, A/C. A.K.A. former sacrificial worship to money pit become just another money pit and donor truck.
71CHEVYSHORTBED402 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 03:50 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com