Coolant leaking from top of rear engine

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02-09-2014, 10:37 AM

91ls1silverado

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Coolant leaking from top of rear engine

I was putting coolant on the radiator, and when it was full i noticed it started to leak from the back of the block, like very slow drips but then it stopped... what could it be?

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02-09-2014, 11:14 AM

KCS

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Coolant crossover/block off ports.

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02-09-2014, 12:00 PM

91ls1silverado

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Are they messed up or what? What do i do? New to this srry

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02-09-2014, 12:25 PM

JakeFusion

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Did you install one without the little metal gasket? I had one stick to my old heads and when I reinstalled, I didn't noticed. I caught it before starting up.