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Old 11-11-2014, 04:27 PM   #3
Lee H
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Join Date: Jun 2010
Location: Upland Ca
Posts: 4,150
Re: heater hose fitting on intake - size?

Usually the intake to inlet (bottom) of heater core is 5/8 ID, return form the core to radiator or water pump is 3/4 ID.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner.

1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components.

My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703
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