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heater core

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Old Mar 23, 2004 | 08:46 PM
  #1  
1fast91rs's Avatar
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From: windsor locks,ct
Car: 1991 RS
Engine: 305 LO3(TBI)
Transmission: TH-700R4
heater core

i am in the process of rehooking my heater core up but i cant remember where each hose hooks up to the engine
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Old Mar 24, 2004 | 08:34 AM
  #2  
Jim Berry's Avatar
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From: San Antonio, Texas
Car: '86 Trans Am
Engine: LG4
Transmission: 700R4
Axle/Gears: 3.70 Posi disc 9 bolt
Funny, I just removed my heater core yesterday. It was leaking big time. A new one at Auto Zone was $17. I will install it in time for next winter about December of this year. In TX, I shouldn't need it until then. It was a PITA to get it out though.

One hose will come from the intake (to the left of the thermostat housing) and the other will come from the top of the water pump. As for the heater core, you will probably want it to fill from the top and empty from the bottom. If you are standing in front of the car, the right side will fill and the left will empty.

Jim.
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Old Mar 25, 2004 | 07:10 AM
  #3  
1fast91rs's Avatar
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From: windsor locks,ct
Car: 1991 RS
Engine: 305 LO3(TBI)
Transmission: TH-700R4
any pics?
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Old Mar 28, 2004 | 08:53 PM
  #4  
Jim Berry's Avatar
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From: San Antonio, Texas
Car: '86 Trans Am
Engine: LG4
Transmission: 700R4
Axle/Gears: 3.70 Posi disc 9 bolt
Sorry, no pics. Haven't picked up a digital one yet.

Jim.
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Old Mar 31, 2004 | 07:23 AM
  #5  
wdigitog's Avatar
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From: Deer Park, N.Y.
Car: 1983 z-28/SFC/bilsteins/adj.arms
Engine: 355sbc/Demon650dp/hedmanheaders/
Transmission: t-5, alum DS
Axle/Gears: 3.42 torsen posi, baer discs
the core has two pipes coming into the engine compartment: the large one goes to the outlet at the front of the intake manifold; and the smaller pipe goes into the inlet at the rear of the manifold.
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Old Mar 31, 2004 | 11:45 PM
  #6  
Jim Berry's Avatar
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Joined: May 2001
Posts: 552
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From: San Antonio, Texas
Car: '86 Trans Am
Engine: LG4
Transmission: 700R4
Axle/Gears: 3.70 Posi disc 9 bolt
Rear of the intake manifold? What kind of intake are u using? Should go to the water pump.

Jim.
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Old Apr 7, 2004 | 12:50 AM
  #7  
1fast91rs's Avatar
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Joined: Jul 2003
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From: windsor locks,ct
Car: 1991 RS
Engine: 305 LO3(TBI)
Transmission: TH-700R4
its the stock 305 tbi intake
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Old Apr 7, 2004 | 12:58 AM
  #8  
Jim Berry's Avatar
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Joined: May 2001
Posts: 552
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From: San Antonio, Texas
Car: '86 Trans Am
Engine: LG4
Transmission: 700R4
Axle/Gears: 3.70 Posi disc 9 bolt
Ahh, me no have TBI. Can't help with the routing there.

Jim.
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