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BB heater core in a SB housing

3K views 8 replies 6 participants last post by  sbc1320 
#1 ·
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!
 
#7 · (Edited)
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/1967-1968-1...Parts_Accessories&hash=item35bbc7b7c5&vxp=mtr
 
#8 ·
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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