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Home » Public Forums » GMCnet » [GMCnet] The Restoration. Looked Inside the 403. And a compression test.
[GMCnet] The Restoration. Looked Inside the 403. And a compression test. [message #290377] Mon, 16 November 2015 02:24
BobDunahugh is currently offline  BobDunahugh   United States
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Registered: October 2010
Location: Cedar Rapids, IA
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Put the camera to good use. Looked inside of each cylinder. The machining on the cylinder walls looked great. There was almost nothing on the top of the pistons. I could easily read the stamping that indicated that it was bored .030 over.Then looked inside the oil pan by way of the oil drain plug hole. Very nice. And could see that the engine was balanced. The paper work that I got indicated that the engine had truly been re manufactured. And that it had 1,813 miles on it. But it is nice to look for yourself. Then did a compression test. All cylinders were between 148 to 154 PSI.Bob Dunahugh
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