BB heater core in a SB housing - Chevy Nova Forum
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Old 1st-January-2013, 10:27 PM   #1
fender0708

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BB heater core in a SB housing

Anyone know if you can put a big block heater core into a small block housing or whats involved? I deleted the AC on my car and want to run a big block heater core. If anyone knows of a thread where someone posted pics of this done already please let me know. Thanks in advance for your help!
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Old 1st-January-2013, 10:39 PM   #2
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I put a bb core in both of my sb housings. I bought a conversion kit to change the outlet location. It is nothing more than a metal plate and a gasket. It came from Classic industries.
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Old 1st-January-2013, 10:42 PM   #3
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Here is a picture of my 72 with the change done to the heater box.
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Old 1st-January-2013, 10:51 PM   #4
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Thumbs up

Thanks. I have purchased a cover but wasn't sure if the heater core just fit right in the housing or if I had to do something special to make it work. Was yours originally an AC car?
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Old 2nd-January-2013, 01:04 AM   #5
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Quote:
Originally Posted by fender0708 View Post
Thanks. I have purchased a cover but wasn't sure if the heater core just fit right in the housing or if I had to do something special to make it work. Was yours originally an AC car?

Neither of my cars had A/C from the factory.
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Old 2nd-January-2013, 03:58 PM   #6
jackb

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think you will need a different box if it was ac car.
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Old 2nd-January-2013, 04:49 PM   #7
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They make a cover to convert an AC car to a non-AC car. Kind of expensive for the part, but it allows you to do it without welding up the hole.

Camaro custom Air Conditioning cut-out heater delete cover. Cover is for factory equipped cars with Air Conditioning. Eliminates the factory firewall evaporator box, offering a clean under hood look while sealing the firewall, allowing a completely functional heater system. Your existing stock AC underdash heater box, heater core, defroster and control are retained for fully functional heater and defroster. OE quality die-molded fiberglass with heavy pre-finished black gel-coat. Made in the USA!

http://www.ebay.com/itm/1967-1968-19...c7b7c5&vxp=mtr
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Old 3rd-January-2013, 05:19 AM   #8
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I did it on my 4th gen, same exact thing though. I chose not to buy a kit and do it myself.J

Just grabbed a hole saw slightly larger than the heater hose, drilled my holes based of measuring the heater core tubes and looking at bbc cover photos.

To fill the old holes I took the factory foam/rubber "gasket" piece, took expanding spray foam and filled the holes, waited for it to dry, shave flat and painted black! works perfectly!!
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Old 3rd-January-2013, 03:55 PM   #9
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Quote:
Originally Posted by Nova_Guy View Post
They make a cover to convert an AC car to a non-AC car. Kind of expensive for the part, but it allows you to do it without welding up the hole.

Camaro custom Air Conditioning cut-out heater delete cover. Cover is for factory equipped cars with Air Conditioning. Eliminates the factory firewall evaporator box, offering a clean under hood look while sealing the firewall, allowing a completely functional heater system. Your existing stock AC underdash heater box, heater core, defroster and control are retained for fully functional heater and defroster. OE quality die-molded fiberglass with heavy pre-finished black gel-coat. Made in the USA!

http://www.ebay.com/itm/1967-1968-19...c7b7c5&vxp=mtr
Here is a cheaper one:

http://www.acdelete.com/pages/68-74_X-Body.htm
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