Holley 4150 Aluminum ULTRA XP 650 CFM CIRCLE TRACK 57750BK Previously used exclusively in the

Previously used exclusively in the aerospace industry

Mopar A-Body 108 in W

the Hi-Tech belt drive system for Chevrolet Big Block reduces flap through the RPM range while absorbing crankshaft harmonics to prevent performance-robbing valve train instability

XLO Ultimate

3" brake duct hose can then be hose clamped to flange

Holley 4150 Aluminum ULTRA XP 650 CFM CIRCLE TRACK 57750BK Previously used exclusively in theXtreme Performance Holley Ultra XP(TM) Circle Track Carburetors! Ultra XP carbs are 38% lighter than our original HP, have fuel capacity that is 20% greater and 30 other new features! They're available in our Hard Core Gray(TM) hard coat anodized finish with Black(TM) billet for improved corrosion protection & also available in natural tumble polished aluminum with Black(TM) metering blocks and base plate. The Aluminum Ultra XP Circle Tracks are