Carbureted Intake for LS1's - New Dog, Old Trick
The next upgrade to our LS1 was to swap out the rev-limiting valve springs. GMPP recommended a set of blue LS6 springs. The slick spring removal tool is from Moore Motorsports and made the replacement job a breeze. The new springs helped the engine rev right up to about 6,700 rpm without experiencing valve float. View Related Article
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