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706 heads coolant fix?

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Old 05-13-2014, 08:31 AM
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Thanks for the info. Ill just have to see what she wants to do. If I replace the heads I would want to put lifters in it too because it has a tick also. What's the best way to clean under that valve covers before I use the stop leak if I do that.
Old 06-01-2014, 10:02 PM
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How much coolant is it using? If it's castech heads, it will be a slow loss. The crack in the head doesn't leak very fast. If it's bad head gaskets, it will be a lot faster and get progressively faster. I had castech heads, thought I had a crack, turned out to just be bad head gaskets.
Old 06-02-2014, 08:43 AM
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I think it's a slow leak but ill ask.
Old 12-17-2015, 11:56 AM
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Originally Posted by j.mo
I have a set of 862 heads I just took off my 5.3
They have around 10-12k miles on them. Complete with springs that I'll let go for a good price
I put on 243s
Still have the heads
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