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
tmp203-1.jpg
A UNITED MOTORS LINE

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