94 step air-suspension installation, dialing in carbs for big cams, 2005 Ford GT preview, Member Don Groff's home-built Phantom Buick, Member Troy Boettcher's Free Ride, '30s era hot rod road test, member tips and tricks, and member tested products.
Until recently, the most common remedy for a camshaft-induced poor idle has been for engine builders to drill a hole in each butterfly or throttle plate within the carburetor. But why can the quality of idle be so adversely affected by the installation of a performance or racing camshaft? And why would such customized holes be used to improve the idle?
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