Heater core box - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Williammack4 · 04-25-2018, 06:10 PM

I’m looking to clean up and remove some un needed stuff in my engine bay and was curious to knowin if the heater core box can be removed?
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Bandit130 · 04-25-2018, 06:38 PM

tucsonjwt · 04-25-2018, 06:42 PM

Yes, As i recall, 3 or 4 bolts hold it on to the firewall. One bolt on top nearest the engine is hard to access, so a flex extension and inspection mirror would be best to get at it. Reinstallation is best as a two person job, but you can use small screwdrivers or drift pins to line up the holes if you are working alone.

The foam seal between the box and the firewall will likely be shot, so you can get some adhesive backed foam door weatherstripping from Home Depot or Lowes to replace it. If you are really anal like me, you can get some metal duct tape while you are there and go around the edge of the box, and also use that tape to seal all of the connections on the HVAC duct work. Sealing those ducts makes a big difference in how much air comes out of the vents.

Williammack4 · 04-25-2018, 07:11 PM

Quote:

Originally Posted by tucsonjwt

Yes, As i recall, 3 or 4 bolts hold it on to the firewall. One bolt on top nearest the engine is hard to access, so a flex extension and inspection mirror would be best to get at it. Reinstallation is best as a two person job, but you can use small screwdrivers or drift pins to line up the holes if you are working alone.

The foam seal between the box and the firewall will likely be shot, so you can get some adhesive backed foam door weatherstripping from Home Depot or Lowes to replace it. If you are really anal like me, you can get some metal duct tape while you are there and go around the edge of the box, and also use that tape to seal all of the connections on the HVAC duct work. Sealing those ducts makes a big difference in how much air comes out of the vents.

Thank you for the quick reply! But I was curious to see if I am able to completely get rid in it’s entirety to create more space.
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dmack91 · 04-26-2018, 12:57 AM

You can pull it, but you will lose the fan for the heat/defroster.

04-25-2018, 06:10 PM	#1
Williammack4 Registered User Join Date: Apr 2018 Location: Suffolk, VA Posts: 2	Heater core box I’m looking to clean up and remove some un needed stuff in my engine bay and was curious to knowin if the heater core box can be removed? Posted via Mobile Device

04-25-2018, 06:38 PM	#2
Bandit130 Registered User Join Date: Dec 2014 Location: Euless, Texas Posts: 510	Re: Heater core box __________________ 1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice

04-25-2018, 06:42 PM	#3
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,188	Re: Heater core box Yes, As i recall, 3 or 4 bolts hold it on to the firewall. One bolt on top nearest the engine is hard to access, so a flex extension and inspection mirror would be best to get at it. Reinstallation is best as a two person job, but you can use small screwdrivers or drift pins to line up the holes if you are working alone. The foam seal between the box and the firewall will likely be shot, so you can get some adhesive backed foam door weatherstripping from Home Depot or Lowes to replace it. If you are really anal like me, you can get some metal duct tape while you are there and go around the edge of the box, and also use that tape to seal all of the connections on the HVAC duct work. Sealing those ducts makes a big difference in how much air comes out of the vents.

04-26-2018, 12:57 AM	#5
dmack91 Registered User Join Date: Jan 2011 Location: Redmond, OR Posts: 754	Re: Heater core box You can pull it, but you will lose the fan for the heat/defroster. __________________ 68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress



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