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Rawze · 05-02-2016, **(Subject: Oil samples )**

(05-01-2016 )dbl overdrive Wrote: Runs great. Although it is a spike in copper and aluminum, its not very much.
You guys got me thinking and with 958,000 miles I think it's time for new cam bushings.
I will tear it down this week and see how they look.
I think my truck (the guinea pig) will like it and I need the education. Lol.

At 900k + miles on it,.... If the cam bushings are gone,.. more than likely the rest of the head is going that way too. Pull the intake manifold off and look at the valve stems on a few cylinders to see if they are seeping oil. As well,.. check the clearance of the detent position of all the engine brake rockers AFTER you have set them all to 0.276 like the book specifies. If any are less than about 0.030" or so movement between the detent position and the valve,.. the head is worn out.