or you don't have a heater core?
Which Heater Core
Race Director
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
I took my old heater core to the radiator shop, they used my side tanks and recored it...cost me $35.00. Perfect fit..I had purchased the AC unit, and the fit was horrible, sent the core back.
Drifting
Joined: Oct 2003
Posts: 1,426
Likes: 1
From: VetteMOD
St. Jude Donor '05-'07
In my limited experience with new heater cores, I find that generally the inlet and outlet tubes are poorly formed on ALL new heater cores. This stresses the core when installed. I ended up recoring my original Harrison unit locally and was happy with the results.
Racer
Joined: Oct 2005
Posts: 427
Likes: 0
From: Cary Illinois
I bought a new core at NAPA. The tubes were not bent out enough to fit though the firewall. I took it to a local radiator shop and had them bend out the tubes to match the original heater core and then they reinforced the tubes. Went back in with no problems and runs great 
Thread Starter
Instructor
Joined: Nov 2006
Posts: 178
Likes: 2
From: Litchfield NH
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Racer
Joined: Oct 2005
Posts: 427
Likes: 0
From: Cary Illinois
I'm surprised. The heater core I got from Napa was of good quality and almost identical to my original Harrison I pulled. I had it reinforced and pressure tested before I went through the trouble of putting it in and everything checked out ok. Too bad we can't always get high-quality replacement parts consistently.
Thread Starter
Instructor
Joined: Nov 2006
Posts: 178
Likes: 2
From: Litchfield NH
Heres the pics for comparison
Harrison original GM Core
NAPA made in Mexico Core looks almost like they were trying to plug leaks.
GM Core
NAPA Core broken fins
GM Core
GM Core $129.99
Napa Core $88.00
Peace of Mind PRICELESS
NAPA made in Mexico Core looks almost like they were trying to plug leaks.
GM Core
NAPA Core broken fins
GM Core
GM Core $129.99
Napa Core $88.00
Peace of Mind PRICELESS
