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ryanheacox · 12-27-2017, 10:15 AM

I would suggest using a Graphtite head gasket (I think that's the name). After installing a 5.5 head I couldn't get a good seal with the recommended gasket (the "modern style" with silicone around the water passages) or the stock copper one. Pulling the head with the modern gasket, I found that about half of it never adhered to the block or head... still looked new.

I heard about the graphite gasket, installed it following the instructions to the letter and it's been perfect. Don't quite understand why they say to use copper gasket spray on it but I'm not going to argue. No leaks inside or out.

Now the cracks in the block are the only things that leak...coolant

12-27-2017, 10:15 AM	#22
ryanheacox Senior Member Join Date: Apr 2013 Location: Northwest CT Posts: 1,092	Re: Leaking head gasket I would suggest using a Graphtite head gasket (I think that's the name). After installing a 5.5 head I couldn't get a good seal with the recommended gasket (the "modern style" with silicone around the water passages) or the stock copper one. Pulling the head with the modern gasket, I found that about half of it never adhered to the block or head... still looked new. I heard about the graphite gasket, installed it following the instructions to the letter and it's been perfect. Don't quite understand why they say to use copper gasket spray on it but I'm not going to argue. No leaks inside or out. Now the cracks in the block are the only things that leak...coolant