Heater Core Plumbing
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
Heater Core Plumbing
Just want a quick confirmation from those in the know;
Big hose (3/4") from Heater Core: goes to Water Pump.
Small hose (5/8") from Heater Core; goes to Intake Manifold.
Correct?
Thanks much.
Steve
Big hose (3/4") from Heater Core: goes to Water Pump.
Small hose (5/8") from Heater Core; goes to Intake Manifold.
Correct?
Thanks much.
Steve
Instructor
Joined: Nov 2015
Posts: 246
Likes: 20
From: St. Louis (more or less) Missouri
I tried to research this for you but came to a dead end on my AIM for 1968. I have part numbers but no sizes. The original part numbers don't pop up on supplier sites. If no one answers for you, personal message me and I'll measure for you on my car.
Last edited by NRAROX; Apr 22, 2017 at 10:23 AM.
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
The '73 AIM has the smaller hose's part # that I was able to ID with this site:
http://www.gmpartswiki.com/query
The site couldn't find the other hose part #. And at any rate, the AIM's drawing wasn't conclusive enough for me to draw a conclusion as to where they connected to the engine.
Very kind of you to offer a measurement off your car my friend (wish I had a '68!
). Steve
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
Thank you sir!
The '73 GM Shop Manual shows the coolant flow for the 6-cylinder engine, but not the V-8s. So I'm left to guess the big hose from the Water Pump is pressure into the Heater Core and the smaller hose from the Heater Core is pressure into the Intake Manifold.
Have I got that right?
Steve
Last edited by Cavu2u; Apr 22, 2017 at 03:14 PM.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
There ya go.
Thank you sir!
The '73 GM Shop Manual shows the coolant flow for the 6-cylinder engine, but not the V-8s. So I'm left to guess the big hose from the Water Pump is pressure into the Heater Core and the smaller hose from the Heater Core is pressure into the Intake Manifold.
Have I got that right?
Steve
Thank you sir!
The '73 GM Shop Manual shows the coolant flow for the 6-cylinder engine, but not the V-8s. So I'm left to guess the big hose from the Water Pump is pressure into the Heater Core and the smaller hose from the Heater Core is pressure into the Intake Manifold.
Have I got that right?
Steve
Last edited by Big2Bird; Apr 22, 2017 at 03:39 PM.
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
....... Thanks Big2Bird!
