STANDARD
Good camshaft cores have gotten pretty scarce, and restorers often like to use their original parts anyway. This service allows you to send in your cam, it will be completely resurfaced and reground to original specifications, then it will be returned to you postpaid and ready to put back in your Model A. Broken and heavily rusted cams are beyond saving so please inspect yours prior to sending. You will be contacted before any work is done if a problem is discovered. Click on the 'Print Service Form' icon then print the form. That form will explain the simple process for completing this service.
Camshaft Specifications:
Shaft diameter: 7/8"
Bearing diameter: 1.560"
Block bore diameter: 1.561"
Bearing clearance: (MAX.) .003"
Bearing length: Front, 1-3/4"; Center, 2"; Rear, 1"; 4th (1928), 7/8"
Lift of cam: .285" (Model B: .339" exhaust; .334" intake)
Duration: 188º
Lobe center angle: 113-1/2º
End play spring tension: Approximately 35 pounds
Timing gear mounting flange: 2-5/16" diameter, 5/16" thick
Camshaft material: Special Ford carbon manganese
steel
Cam shaft gear: Bakelized material
Number of gear teeth: 50
Camshaft gear type: Spiral teeth
Gear backlash: .003" to .005"
Gear rotation speed: 1/2 of crankshaft
Camshaft straightness: .0005" to .001"
Variation in eccentricity of pitch diameter of gear teeth: .0015"
Variation in maintaining center distance of mating gears: +/- .001"
Gear tolerances in regular spacing of teeth: 0.0"
| Make | Model | Years |
| Ford | Model A | 1928 |
