Steve-Avanti Posted November 28, 2022 Report Share Posted November 28, 2022 Greetings All, My 77 has a tired original engine & it's getting rebuilt. While it's out, I'm upgrading various issues that need attention. The heater core has leaked for years & needs replacing. Does anyone have dimensions for the original unit? I've read that a 73-96 full size Chevy truck/Blazer etc. core is compatible. Can anyone confirm this? Thanks All!! Steve Link to comment Share on other sites More sharing options...
mfg Posted November 28, 2022 Report Share Posted November 28, 2022 I interchanged a Dodge Aires heater core into a '64 Avanti years ago.. A close fit as far as I can remember. Link to comment Share on other sites More sharing options...
Steve-Avanti Posted November 29, 2022 Author Report Share Posted November 29, 2022 The ones I've seen from the various Avanti vendors are all over $320. The Dodge Aries one you mentioned looks very different. Avanti pics included here. Link to comment Share on other sites More sharing options...
mfg Posted November 29, 2022 Report Share Posted November 29, 2022 I remember that it had less capacity, however it seemed to function OK. Link to comment Share on other sites More sharing options...
Steve-Avanti Posted November 30, 2022 Author Report Share Posted November 30, 2022 Dimensions? Link to comment Share on other sites More sharing options...
mfg Posted December 5, 2022 Report Share Posted December 5, 2022 On 11/29/2022 at 8:38 PM, Steve-Avanti said: Dimensions? Don't have them, however I remember it fit the heater box without modification Link to comment Share on other sites More sharing options...
Steve-Avanti Posted December 6, 2022 Author Report Share Posted December 6, 2022 I finally got my old core out. It was pretty leaky. 1 tube broke off as I yanked it out. Dimensions are approximately: Top to bottom 7 1/8" Left to Right 9 1/2" Thickness 2 3/8" I'm attempting to replace it with a non A/C 350 V8, 73-91 Chevy C10, full size Blazer etc. core with very similar dimensions & tube locations. I'll follow up after I epoxy the brackets on. Thx! Steve Link to comment Share on other sites More sharing options...
Steve-Avanti Posted December 6, 2022 Author Report Share Posted December 6, 2022 So here's the replacement next to the old one. Next up...epoxy new brackets on!! Link to comment Share on other sites More sharing options...
Kodjo Posted December 7, 2022 Report Share Posted December 7, 2022 Great find! Link to comment Share on other sites More sharing options...
mfg Posted December 7, 2022 Report Share Posted December 7, 2022 WOW....that looks like a winner to me!...and I bet it costs much less? Link to comment Share on other sites More sharing options...
Steve-Avanti Posted December 7, 2022 Author Report Share Posted December 7, 2022 $38.99 @ O'Reilly's👍 Link to comment Share on other sites More sharing options...
mfg Posted December 7, 2022 Report Share Posted December 7, 2022 1 hour ago, Steve-Avanti said: $38.99 @ O'Reilly's👍 UNREAL!...I'm going to order one for a spare. Link to comment Share on other sites More sharing options...
mfg Posted December 7, 2022 Report Share Posted December 7, 2022 Thank you for your detective work! Link to comment Share on other sites More sharing options...
Steve-Avanti Posted December 7, 2022 Author Report Share Posted December 7, 2022 It's normally $45 @ O'Reilly's but they price matched Summit's current sale which is $38.99 💰 Link to comment Share on other sites More sharing options...
pantera928 Posted December 8, 2022 Report Share Posted December 8, 2022 22 hours ago, Steve-Avanti said: It's normally $45 @ O'Reilly's but they price matched Summit's current sale which is $38.99 💰 Please post photos of the end result. Thanks Link to comment Share on other sites More sharing options...
Steve-Avanti Posted March 7, 2023 Author Report Share Posted March 7, 2023 Spring is finally here in the Valley of the Sun (we had snow last week) so my heater core project resumes. Today I'm going to JB weld the mounting brackets on. Link to comment Share on other sites More sharing options...
Steve-Avanti Posted March 10, 2023 Author Report Share Posted March 10, 2023 Brackets attached. Original had some sort of rubberized seal all around the edges. Adding a a/c duct sealant so everything sits snug. Link to comment Share on other sites More sharing options...
pantera928 Posted November 12, 2023 Report Share Posted November 12, 2023 (edited) So Steve How is that heater core working out after a year? Where did you get those angle brackets? Thanks Edited November 12, 2023 by pantera928 Link to comment Share on other sites More sharing options...
Steve-Avanti Posted November 14, 2023 Author Report Share Posted November 14, 2023 On 11/12/2023 at 12:40 PM, pantera928 said: So Steve How is that heater core working out after a year? Where did you get those angle brackets? Thanks Heater core is in but it was a total pain in the butt. I had to grind & round off the bracket ends to get it to fit in the heater box. Angle brackets were from angle iron used for garage door track. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now