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Thread: 4150 750 cfm: Black moving part next to the float?

  1. #1

    Default 4150 750 cfm: Black moving part next to the float?

    Hello, I've problem with my carb (4150 750cfm), no fuel inside the manifold.
    To check the float, I removed the carb's bowl and there is a black moving part inside??? (See attached pic.)

    What is it ???
    Thank you, 66Stanger

    66 Hard Top Mustang
    332ci stroker
    290 HR Comp Cams
    Vic Jr Head
    750 CFM Holley sliver
    Pro Magnum Comp Cam Rocker arms
    Manley valves
    11.25:1 JE pistons
    RPM Performer Manifold
    14x5" K&N Air filter
    140 GPH Mallory Fuel Pump
    T5z 0.68 5 speed trans.
    10.5" Cobra Clutch with steel fly wheel
    9" 3.25 Rear end
    Disc brakes
    8 qt Milodon Oil pan (with HV pump for the moment :loco

  2. #2
    Join Date
    Jan 2013
    Constantine, MI


    It's a vent baffle. Goes between metering block and gasket top two center pegs, shouldn't move.

  3. #3
    Join Date
    Dec 2009


    It's a fuel bowl vent baffle.

    (Edit: Hotstuff, you & I were typing at the same time. LOL!)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & MT 245/45R17 tires.

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