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Old 05-18-2014, 04:03 PM   #186
C20scott
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Join Date: Oct 2011
Location: antioch, ca
Posts: 158
Re: Backyard Cummins

Top gear on the highway I saw 39psi at the intake manifold. Pretty sure the wastegate is set right around 40. Im on stock head studs and gaskets, so im not going to push it over 40psi. EGTs are staying nice and low too. I need to figure out how to post a video!
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1969 K20, Cummins 12v conversion in progress...
Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=574152
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