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My Cam with a lot of overlap, needs the Secondary Plates on my Holley 4150 opened more at idle so the Primary Plates are closed enough to allow idle mixture adjustment. It's a pain in the butt, The Carb must be removed, the adjustment is under the base, and it's trial and error until right.
Holley Marketing has a Solution!.... a tiny revised Bracket that allows easy adjustment while the engine is running. GREAT! Look it up.... $42 bucks? REALLY?
Did I buy it? Yup.... Does it work bitchin? Yup.... Am I butt-sore? Yup.... But it's kinda cool...
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.