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
tmp340-1.jpg
A UNITED MOTORS LINE

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