The Ford Barn

Bob Bidonde · 04-01-2024, 09:38 AM

The Model "A" oil pump has a 5/8" diameter shaft A-6608. In 1932 - 1934, the B-6608 Oil Pump shaft is undercut to 9/16" diameter between its bushing locations to increase oil flow for the pressurized oil system in the Model "B" engine. Except for the shafts, the Model "A" pump used from May 1928-1931 is the same as the Model "B" pump. The B-6608 Undercut Shaft can be used in the Model "A's" A-6608 Oil Pump, but the A-6608 5/8" Shaft should not be used in the Model "B's" oil pump.
The B-6608 9/16" diameter shaft is a desirable upgrade for the Model "A's" oil pump to increase oil flow. However, I cannot find the 9/16" shaft in any of the Model "A" parts catalogs. Is the B-6608 9/16" Diameter Oil Pump Shaft available from any parts dealer?

04-01-2024, 09:38 AM	#1
Bob Bidonde Senior Member Join Date: May 2010 Location: Long Island, NY Posts: 4,114	Oil Pump Shaft The Model "A" oil pump has a 5/8" diameter shaft A-6608. In 1932 - 1934, the B-6608 Oil Pump shaft is undercut to 9/16" diameter between its bushing locations to increase oil flow for the pressurized oil system in the Model "B" engine. Except for the shafts, the Model "A" pump used from May 1928-1931 is the same as the Model "B" pump. The B-6608 Undercut Shaft can be used in the Model "A's" A-6608 Oil Pump, but the A-6608 5/8" Shaft should not be used in the Model "B's" oil pump. The B-6608 9/16" diameter shaft is a desirable upgrade for the Model "A's" oil pump to increase oil flow. However, I cannot find the 9/16" shaft in any of the Model "A" parts catalogs. Is the B-6608 9/16" Diameter Oil Pump Shaft available from any parts dealer? __________________ Bob Bidonde