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Re: 93 head gaskets...
OK, here's the scoop. The original gaskets are some crappy material, almost looks brown or greenish looking. I think they used them through 96. Some have them fail, some do not but it appears they will fail on most some day. Some retorque the bolts to prolong it. The new gaskets are a 3 layer metal and other material design, they look black. You also have a crossover housing for coolant back at the thermostat. There are 3 or 4 gaskets there and they leak.
The new gasket kit which includes all gaskets is $950 list and Chuck Tator will set you up with 20% off and no tax/shipping. My suggestion is to go ahead, bite the bullet, and replace them. Peace of mind you won't have an internal failure and ruin your engine. That is why I'm starting mine in a few days.
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