2011 - Crane Cams

VALVE TRAIN
Distributor-Magneto Drive Gears
Copper Alloy (Aluminum/Bronze)
These drive gears are made from high silicon
copper alloy (“aluminum-bronze”) and precision
machined. They are required when using an
8620 steel billet cam.
Certain special Crane roller camshafts are
manufactured using an Iron Gear pressed
onto the steel billet cam. These special cams
DO NOT REQUIRE an aluminum bronze distributor
drive gear. Refer to the specific camshaft
application section of catalog. (Iron Gear
cams’ part numbers have an “IG” suffix at the
end of their grind numbers)
Note: The ”Shaft Diameter” dimension referred
to is the portion of the distributor shaft, or
intermediate shaft, that the gear registers on.
It may be necessary to remove the original
gear to measure the shaft diameter correctly.
Application Part No.
Chevrolet I-4 62-71, 153
For .491”shaft diameter 20990-1
Chevrolet I-6 62-84, 194 thru 250 & 292
For .491”shaft diameter 20990-1
Chevrolet 90° V-6 78-86, 200 thru 262
For .491”shaft diameter. Also fits Crane and Accel 34000, 35000, and 41000 series 11990-1
For .500”shaft diameter. Fits Crane, Accel and MSD with standard configuration gear 11979-1
Chevrolet 90° V-6 85-91, 262 (4.3 litre)
For .427”shaft diameter GM HEI distributors with remote coil 11988-1
Chevrolet V-8 55-87, 262 thru 400
For .491”shaft diameter. Also fits Crane and Accel 34000, 35000, and 41000 series 11990-1
For .500”shaft diameter. Fits Crane, Accel and MSD with standard configuration gear 11979-1
For .500”shaft diameter, with 5/16”hex drive 11973-1
Chevrolet V-8 85-99, 305-350
For .427”shaft diameter GM HEI distributors with remote coil 11988-1
Chevrolet V-8 58-65, 348-409-427 (Z-11)
For .491”shaft diameter 11990-1
Chevrolet V-8 65-90, 396 thru 502
For .491”shaft diameter. Also fits Crane and Accel 34000, 35000, and 41000 series 11990-1
For .500”shaft diameter. Fits Crane, Accel and MSD with standard configuration gear 11979-1
For .500”shaft diameter, with 5/16”hex drive 11973-1
Chevrolet V-8 91-00, 454-502
For .427”shaft diameter GM HEI distributors with remote coil 11988-1
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