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Old 03-15-2017, 08:54 PM   #1
zimmej51
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Member since: Mar 2017
Location: Edmond OK

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81 Heater Core

Greetings all! I'm new here and I'm working on a resto-mod on my 81. It's a frame-off job on a "barn find" that has 41K documented miles. On disassembly I found the coolant to be clear with no sign of excessive corrosion. Since the heater core is such a PITA to replace I'm looking for opinions on whether or not I should swap it out while everything is blown apart. I have read that the OE core is no longer available and the replacements are often of questionable quality and fitment. The original shows no sign of leaking but I still wonder what the best thing to do is. If I could get a new original equipment GM part I'd probably change it but I'm wary of the generic cores. Thoughts?
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Old 03-16-2017, 09:13 AM   #2
Sly Vette
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Member since: Nov 2011
Location: S/E Mich.

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It will never be easier than it is now if you are doing a restoration.... it is 36 years old after all.
If availability is a problem simply have the old one re-cored.
Good Luck!


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Old 03-20-2017, 04:36 PM   #3
hamerDown
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Posts: 235
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Member since: Oct 2013
Location: Glenolden Pa USA

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On my 81 Vette I purchased new I've... (all by myself)
removed the heads to be rebuilt
replaced the Cam and lifters
Fuel Pump
replaced the AC components
replaced the radiator and water pump
replaced all calipers and wheel bearings
all new weather stripping
rebuilt the headlight vacuum pods
removed and rebuilt the automatic transmission (myself)
replaced upper and lower control arm bushings
power steering components
replaced the entire exhaust system
removed the rear and rebuilt it W/new stub axles
removed and rebuilt the trailing arms
re-skinned the seats (myself)
*and the list goes on and on and on
HOWEVER...I was told, when my OE Heater Core goes bad > > > "to burn the Car and collect the Insurance money" because it's that much of a PITA!
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