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Message: [QUOTE="Gary, post: 909680, member: 675"] Over the years I've seen threads about somebody that has done their head gaskets and they failed in a short time. I have wondered if it was because they didn't have the correct finish on the deck, (20-30 RA from what I understand). When you have the heads done they have a fresh finish on them, but the deck probably never gets the same finish, just cleaned up with roloc's. So I have just pulled a set of heads because the head gaskets failed, I can see on the heads and deck that somebody has been there already, you can see the marks from a roloc or disk grinder of some type. Now I'm thinking that the deck and heads need to have the correct 20-30 RA finish so this doesn't happen a third time. The truck is a stock F350 dump truck. So I call my buddy that does my machine work, and he says you absolutely have to have the correct finish on the heads and deck for the head gaskets to seal correctly. Well we know what that means, the short block has come apart. So have any of you guys had the block decked before? IDK, anybody have any thoughts about this??? [/QUOTE]

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