Heater Core For 1967 With A/C

[Rocco S.]

The heater core on my un-restored 1967 A/C coupe has finally started to leak. It was the last cooling system component that will need replacement. In the spring, the original 50 year old radiator was replaced with a DeWitte unit.

Does anyone have recommendations for a replacement heater core? Aftermarket or NOS? I heard bad things about aftermarket units and don't want to do this job twice. I did find someone who has a NOS unit but is very pricey. Many catalogs offer replacements at a much lower cost. LI Corvette offers one without a warranty because the manufacturer is out of business.

Looking for some help/experience/opinions before spending big $ on the NOS unit.

Thank You,
Rocco Scotellaro
1967 Lynndale Blue Coupe
L79, M21, G81, C60, K66, N11, A31, A01, A82, U69

[Keith B.]

Re: Heater Core For 1967 With A/C

find a radiator shop that can recore it

[Mike M.]

Re: Heater Core For 1967 With A/C

agree with keith. the oriental core are notoriously leakers. when there was a radiator shop in cumbeland, they had a 5 or 6 foot length of heater core stock. they'd cut and solder my old end tanks for about 50 bucks. good luck finding a shop with american made cores. mike

[Patrick B.]

Re: Heater Core For 1967 With A/C

Don't waste your money with Delco "NOS" cores. They are just the Mexican heater cores that you can get from your FLAPS with a Delco label pasted over the original label and the price inflated by 500 percent.

[Gary J.]

Re: Heater Core For 1967 With A/C

I am out of town so I can't refer to my vendor list, but there is a place in New York that sells American made heater core.

[Joe L.]

Re: Heater Core For 1967 With A/C

Don't waste your money with Delco "NOS" cores. They are just the Mexican heater cores that you can get from your FLAPS with a Delco label pasted over the original label and the price inflated by 500 percent.

Patrick------


I don't think so if it's a GM #3008575. That was the heater core originally used for 1963-67 Corvettes with A/C. It was discontinued without supersession in March, 1974. That's way before any foreign-manufactured heater cores came into the GM parts system. And, much later, when the foreign manufactured cores came into the GM parts system the part numbers usually always changed to an 8 digit number beginning with "5".

Nevertheless, I probably wouldn't pay Big $$$$ for an NOS GM #3008575. Among other reasons, who knows if the NOS core, now at least 43 years old, has not suffered from corrosion damage over the years of its storage? Re-coring with a quality replacement core is probably the way to go.

[Rocco S.]

Re: Heater Core For 1967 With A/C

All,

Thanks for all your replies. Just to clarify, the NOS unit I am interested in is #3008575. The owner purchased all the GM heater core inventory around 1977. So it is still a high quality unit. It still in its original GM sealed box. Of course there is still a risk that the solder joints on a 43+ year old core may be bad. If I decide to go that way I will have it pressure tested before installing. Very few, if any rad shops in my area still do re-cores of radiators. Most just will sell you a replacement as its cheaper and less risk for the shop. But I will still consider that option.

[Dick W.]

Re: Heater Core For 1967 With A/C

All,

Thanks for all your replies. Just to clarify, the NOS unit I am interested in is #3008575. The owner purchased all the GM heater core inventory around 1977. So it is still a high quality unit. It still in its original GM sealed box. Of course there is still a risk that the solder joints on a 43+ year old core may be bad. If I decide to go that way I will have it pressure tested before installing. Very few, if any rad shops in my area still do re-cores of radiators. Most just will sell you a replacement as its cheaper and less risk for the shop. But I will still consider that option.

From my experience as a former radiator shop owner, if the core has never been used, still dry, you should have no problems.

[Patrick B.]

Re: Heater Core For 1967 With A/C

Patrick------


I don't think so if it's a GM #3008575. That was the heater core originally used for 1963-67 Corvettes with A/C. It was discontinued without supersession in March, 1974. That's way before any foreign-manufactured heater cores came into the GM parts system. And, much later, when the foreign manufactured cores came into the GM parts system the part numbers usually always changed to an 8 digit number beginning with "5".

Nevertheless, I probably wouldn't pay Big $$$$ for an NOS GM #3008575. Among other reasons, who knows if the NOS core, now at least 43 years old, has not suffered from corrosion damage over the years of its storage? Re-coring with a quality replacement core is probably the way to go.

The Delco relabeled core was for a C2 without AC.

[Joe L.]

Re: Heater Core For 1967 With A/C

The Delco relabeled core was for a C2 without AC.

Patrick------


That's different. The 63-67 without A/C core was originally GM #3008574. This core was manufactured by Delco-Harrison in the USA. It was discontinued many years ago and replaced by GM #52484057. The latter core was manufactured in various foreign countries---first Mexico and, later, the far east. It's now discontinued without supersession.

[Patrick B.]

Re: Heater Core For 1967 With A/C

Patrick------


That's different. The 63-67 without A/C core was originally GM #3008574. This core was manufactured by Delco-Harrison in the USA. It was discontinued many years ago and replaced by GM #52484057. The latter core was manufactured in various foreign countries---first Mexico and, later, the far east. It's now discontinued without supersession.

Delco just discontinued printing the label. You can still get the same core in the Same APDI box from your FLAPS just without the Delco label pasted over the APDI label for about $50.

[Joe L.]

Re: Heater Core For 1967 With A/C

Delco just discontinued printing the label. You can still get the same core in the Same APDI box from your FLAPS just without the Delco label pasted over the APDI label for about $50.

Patrick------


No doubt. These heater cores are a more-or-less commodity item. Regardless of the brand, at any particular time the manufacturing source for any particular application is usually the same. I expect that GM discontinued the C2 core because sales volume fell so low it no longer met their standards for continuation. It might still be available through Delco, though.

C3 and C4 guys have another option: all aluminum heater cores with no plastic tanks and all welded construction. Yes, they're foreign manufactured but I'd use one any day over a copper/brass unit with solder joints, even an NOS GM example.