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coolant leak on trick flow heads!! help!

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Old May 30, 2010 | 10:32 AM
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Question coolant leak on trick flow heads!! help!

I just installed 225 trick flow heads on my ls1 and i went to put coolant in it and it leaked out of a hole on the side of the heads, does anybody know what that is or if i need to plug it with a pipe plug or a bolt and if so what size. It is on the passenger side of the car. Thanks.
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Old May 30, 2010 | 10:39 AM
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you need to take the plug out of your stock heads and put it in there. When I did my head swap, I put my coolant temp sensor there. Either will work.
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Old May 30, 2010 | 10:42 AM
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Originally Posted by 99FormulaM6
you need to take the plug out of your stock heads and put it in there. When I did my head swap, I put my coolant temp sensor there. Either will work.
where is the coolant temp sensor at?
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Old May 30, 2010 | 10:58 AM
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On the passenger side you put the plug and on the driver side you put the temperature sensor from your stock heads.
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Old May 30, 2010 | 11:59 AM
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Here's a view from the driver's side...



The passenger side will need/have the plug towards the back since the heads from LH to RH are identical.
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Old May 30, 2010 | 12:56 PM
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and to clarify my post, I put my aftermarket temp sender there. the stock one stays in the driver side head
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Old May 30, 2010 | 05:13 PM
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Yes...what they said.
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Old May 30, 2010 | 05:24 PM
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And when you get both those holes filled make sure you have cross over pipes or plugs on both front and rear of both heads.
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Old May 30, 2010 | 05:48 PM
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thanks for the help. got it figured out now on to the next problem. https://ls1tech.com/forums/fueling-i...-pressure.html
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Old May 31, 2010 | 08:34 AM
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thanks for all your help you people are awesome, leaks fixed, fuel pressure fixed, now no spark!these computer cars are something else, thanks again.bad 98ss" dad.

Last edited by Bad98SS; May 31, 2010 at 08:37 AM. Reason: info
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