ROCHESTER CARBURETORS

Bulletin 9C-301 1 April 1953

	CHEVROLET-1932-52 Automatic Choke Carb. for 216 Cu. In. Engine CARBURETOR 7004620 - SERVICE PKG. 7005060
	TUNE-UP SPECIFICATIONS Year and Spark Plug Breaker Ignition Idling Model Gap Point Gap Timing R.P.M. 1932 All .024 .018 12° BTDC. 450-500 1933-34 All .032 .018 10° BTDC. 450-500 1935 Master and Truck .032 .018 5° BTDC. 450-500 1935 Standard .030-.035 .018 5° BTDC. 450-500 1936 All .032-.035 .018 5° BTDC. 450-500 1937-46 All .040 .018 5° BTDC. 450-500 .018-.024 New Installation 1947-48 All .040 .015-.022 Old 5° BTDC. 450-500 .018-.024 New Installation 1949-52 All .035 .015.022 Old Points 5° BTDC. 450-500
	CARBURETOR SPECIFICATIONS Dimensions: Primary Venturi -1-7/32 Secondary Venturi—9/16 Identification: Main Metering Jet—Stamped 52 Air Horn Gasket—Stamped 4480 Idle Discharge Holes: Idle Needle Orifice—.067 Second Idle Hole—.028 x .015 Nick Third Idle Hole—.028 x .010 Above Fourth Idle Hole—.028 x .045 Above Spark Drilling—2—.040 X .013 Above Pump Discharge Hole—.028 Choke Restrictions—.089 Power Restrictions—.0375
	A GENERAL MOTORS PRODUCT		A UNITED MOTORS LINE

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