LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

LT1 Third gen rad problem

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Old Aug 3, 2012 | 03:11 PM
  #1  
thunder57's Avatar
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From: St Catharines
Car: 1987 IROC
Engine: LS1
Transmission: T-56
Axle/Gears: 3:42, 10 Bolt LT1
LT1 Third gen rad problem

I've read on the forums that you can "T" the line from the steam pipe with the overflow and run one hose into the top of the rad. My problem is the overflow fills up and spills over and the radiator empties. The rad cap is not allowing fluid into the radiator. How would I get around this problem? Thanks.
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Old Aug 3, 2012 | 05:34 PM
  #2  
72vega's Avatar
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From: Erie PA
Car: 2008 Silverado, 73 LeMans, 1987 GTA
Engine: 4.8, 350 Pontiac, 350 LT1
Transmission: 4L65E, TH350, T56
Axle/Gears: 3.42, 2.73, 3.42
Re: LT1 Third gen rad problem

dont t it. get a 94 camaro upper hose and run the steam pipe there. no more problem.
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Old Aug 3, 2012 | 06:34 PM
  #3  
thunder57's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2004
Posts: 84
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From: St Catharines
Car: 1987 IROC
Engine: LS1
Transmission: T-56
Axle/Gears: 3:42, 10 Bolt LT1
Re: LT1 Third gen rad problem

I already got a 94 Corvette lower rad hose, would it be okay to T the steam pipe into the return line for the heater core?
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Old Aug 3, 2012 | 06:38 PM
  #4  
thunder57's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2004
Posts: 84
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From: St Catharines
Car: 1987 IROC
Engine: LS1
Transmission: T-56
Axle/Gears: 3:42, 10 Bolt LT1
Re: LT1 Third gen rad problem

I just looked up the hose you mentioned, I'll have to see if I can find it from a local supplier. Thanks.
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Old Aug 3, 2012 | 07:59 PM
  #5  
72vega's Avatar
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20 Year Member
iTrader: (9)
 
Joined: Mar 2002
Posts: 255
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From: Erie PA
Car: 2008 Silverado, 73 LeMans, 1987 GTA
Engine: 4.8, 350 Pontiac, 350 LT1
Transmission: 4L65E, TH350, T56
Axle/Gears: 3.42, 2.73, 3.42
Re: LT1 Third gen rad problem

i was gonna say when did i mention a 94 corvette lower?
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