ROCHESTER CARBURETORS

Bulletin 9C-302 1 April 1953

CHEVROLET-1952 POWERGLIDE-Auto. Choke Carb.-7003526
TUNE-UP SPECIFICATIONS Year and Model Spark Plug Gap Breaker Point Gap Ignition Timing Idling RPM 1950-52 Powerglide .035" .018"-.024" New Installation .015"-.022" Present Points 5 deg. btdc 500 in "N" CARBURETOR SPECIFICATIONS Dimensions: Primary Venturi—1-11/32" Secondary Venturi—19/32" Identification: Main Metering Jet—Stamped 57 Air Horn Gasket—Stamped 4480 die Discharge Holes: Idle Needle Orifice—.073" Second Idle Hole—.040" x .010" Nick Third Idle Hole—.028" x .065" Above Spark Drillings—2—.040" x .010" Above Pump Discharge Hole—.031" ^hoke Restriction—.089" Power Restriction—.046"
A GENERAL MOTORS PRODUCT		A UNITED MOTORS LINE

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