C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Jan 6, 2023 | 12:35 PM
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Hello, I pulled the heads from my 89 6 spd today. Here is a [picture of each head. I think the drivers side did have a water leak.

Drivers side

Drivers side

Passenger side Head

Passenger side
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Old Jan 6, 2023 | 04:13 PM
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It doesn't look too bad... Scrape off what's left of the head gaskets and look for cracking between the cylinders. The antifreeze you see is nothing to worry about. That happens with a head removal. But the rust is another story. Clean it up as best as you can with a scotch-brite pad, and rotate the crank to expose more of the cylinder that may need to be cleaned. Have the heads resurfaced at a machine shop to make sure everything is flat, and put it back together with a new head gasket. You should be OK with that, but do a compression test once you get it running again. Have fun!
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Old Jan 6, 2023 | 05:05 PM
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Livewire1, Thank you. When I took it apart my first thought was they don't look too bad. With respect to the rust. I bought this car 5 years ago. It sat for 11 years. The pistons were rusted in place. Two weeks of Marvel Mystery oil C5R and gentle tugs on a breaker bar and the engine rotated, OH Yeah. This is the first time this engine has been apart. And, last year I did a compression test. All the cylinders were about 180 psi, on my gauge.
I needed to use a universal on an extension to remove the head bolts on the passenger side of the engine near the exhaust manifolds. I am worried about torqueing the heads down.
Thank you
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Old Jan 7, 2023 | 09:34 AM
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If there's a lucky engine, this one is it! Probably your entire coolant problem can be blamed on bad head gaskets, and you'll enjoy many more miles in your C4! Good luck!
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Old Jan 7, 2023 | 10:37 AM
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Livewire1 I think you are correct
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