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Old 05-08-2016, 02:50 PM   #6
old motorhead

 
Drives: Maggie blown LS3 vette
Join Date: Aug 2009
Location: SE TX
Posts: 1,490
Belt slip. Once you start making boost, the belt stretches. If the belt isn't the shortest one you can wrestle on there, the tensioner will run out of travel and lose the ability to keep the belt tight.
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