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Old 02-19-2004, 11:12 AM   #1
fine 67
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Join Date: Jun 2001
Location: webster,n.y.,usa
Posts: 127
help question

on my 72 blazer 350 with a/c does the heater hoses go one to the intake and the other to the waterpump.on mine it returns to the radiator.i 'm returning to factory orginal. thanks
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Old 02-19-2004, 11:16 AM   #2
CPNE
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Join Date: Dec 1999
Location: NH
Posts: 6,664
If it's an auto truck, the return to the radiator is correct. If standard, the return to water pump is correct. No clue as to why the difference in routing but that's the way it was done at the factory.
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Currently on or near the homestead:

67 Chevy SWB 2WD stepside 350/3 on tree (Pat's)
67 GMC SWB 2WD Fleet 402/auto (Brian's under construction)
67 Chevy 3/4 ton 2WD 402/auto (Business Hauler)
67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC)
68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC)
70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC)
71 Chevy SWB stepside (Crushed by tree - parts donor)
72 Chevy 3/4 ton 4WD (Parts donor)
72 Chevy 3/4 ton 4WD Suburban (Parts Donor)
72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC)
81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler)
82 Camaro Z/28 355/Super T-10 (Pat's toy)
93 Caprice 9C1 (Brian's Cop Car)
02 Toyota Camry (Reliable but a souless steel and plastic hulk)
2011 2SS RS Camaro M6 Factory Hurst Shifter

Maybe I need to sell some of this crap

Yet another Bozo with a sawz-all
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Old 02-19-2004, 02:30 PM   #3
JimKshortstep4x4
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Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
Talking

Jeff,

My theory is that having the heater hooked up to the radiator on an automatic causes the coolant to flow around the transmission cooler as it is located on the side where the heater hose hooks to the radiator.

Jim
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