07-26-2018, 07:14 PM
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#10
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Drives: Grandad's C2 L89
Join Date: May 2017
Location: 20*51.50N 156*29.60W
Posts: 1,711
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Quote:
Originally Posted by wstaab
I air is present in the present in the intercooler system for the supercharger the pump cavitates and shuts down for three minutes. There is no warning light just very high manifold temps which pulls timing and you loose power.When the pump restarts and and cavitates again the same problem occurs. The intercooler system must be vacuum filled to purge all the air. The fitting required is not the same as the LT4 in the Corvette. Why GM decided you need two different fittings for basically the same engine is a mystery. The vacuum system tool is the same for both LT4 versions. Corvettes suffer the same problem.
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Good info. Thanks.
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2018 ZL1 1LE sw/PDR
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