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Old 05-20-2007, 08:29 PM   #1
Sport/Truck
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This cant be the original heater core can it?

Got this puppy out today and its in good shape. I googled Harrison and found that they are some of the best. I’m not sure if this is what is used from the factory.
whatcha think Original or not?
s/t
PS the cigarette probably is original 1971 Marlboro- look for it on ebay!
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

Last edited by Sport/Truck; 10-04-2007 at 08:10 PM.
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Old 05-20-2007, 08:40 PM   #2
rage'nrat638
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Re: This cant be the original heater core can it?

yup looks original to me..
harrison made the a/c units for gm for years

don't u remember seeing the blue and chrome stickers saying harrison on the a/c boxes
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Old 05-20-2007, 08:49 PM   #3
GMC Jim
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Re: This cant be the original heater core can it?

Harrison is a company owned by GM, I believe,. Also, Rochester, Carter, Delco, Delco-Remy, Fisher Body, Guide, New Departure, Hyat, Morraine, Fridigidaire,etc.... I recall back when I was a parts guy for a GM dealership...was able to name about 40 companies owned/controlled by GM
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