Radiator Hose Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69 COPO · 01-13-2009, 02:50 PM

1. I have a blazer with air, heater hose goes to the water pump. No hole in radiator for the hose. I think after market 4-core radiator

2. I have a pickup with air, heater hose goes to the radiator. There's a plug in the water pump where hose would go. gm 4-core Harrison's

Can anyone tell me why this is or if one way is correct for a 71 air pickup. Thanks

badpeanut · 01-13-2009, 10:59 PM

My '72 air pickup has it in the radiator.

JimKshortstep4x4 · 01-14-2009, 09:41 AM

My son's 71 with AC and automatic transmission has the hose routing to the radiator.

Here is a picture out out of the Assembly Manual showing the various hose routings.

Jim

69 COPO · 01-14-2009, 10:36 AM

Thanks guys, I appreciate the info. I think the aftermarket radiator just didn't have the outlet on the radiator so they ran it to the water pump.

**El Jay** · 01-14-2009, 03:46 PM

Quote:

Originally Posted by badpeanut

My '72 air pickup has it in the radiator.

Ditto

01-13-2009, 02:50 PM	#1
69 COPO Registered User Join Date: Feb 2005 Location: S.E. South Dakota Posts: 161	Radiator Hose Question 1. I have a blazer with air, heater hose goes to the water pump. No hole in radiator for the hose. I think after market 4-core radiator 2. I have a pickup with air, heater hose goes to the radiator. There's a plug in the water pump where hose would go. gm 4-core Harrison's Can anyone tell me why this is or if one way is correct for a 71 air pickup. Thanks

01-13-2009, 10:59 PM	#2
badpeanut Not a bad nut after all.. Join Date: Dec 2000 Location: ND Posts: 1,756	Re: Radiator Hose Question My '72 air pickup has it in the radiator. __________________ '05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer

01-14-2009, 09:41 AM	#3
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Radiator Hose Question My son's 71 with AC and automatic transmission has the hose routing to the radiator. Here is a picture out out of the Assembly Manual showing the various hose routings. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC Last edited by JimKshortstep4x4; 07-14-2009 at 12:53 PM.

01-14-2009, 10:36 AM	#4
69 COPO Registered User Join Date: Feb 2005 Location: S.E. South Dakota Posts: 161	Re: Radiator Hose Question Thanks guys, I appreciate the info. I think the aftermarket radiator just didn't have the outlet on the radiator so they ran it to the water pump.



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