| Year | Model Designation | Wheel base Inches |
Valve Location |
Bore and Stroke | Piston Dis place ment Cubic Inches |
Com pres sion Ratio (Stand ard) |
Maximum Brake H.P. @ R.P.M. |
Maximum Torque Lbs. Ft. @ R.P.M. |
Normal Oil Pressure Pounds |
Spark Plug Gap |
Point Gap |
Dwell Angle |
Firing Order |
Ignition Timing BTDC or Mark |
|
| 1950 | Special 6 | HJ | 115 | In Head | 3 1/2 x 3 3/4 | 216.5 | 6.6 | 92 @ 3400 | 176 @ 1500 | 14 | .035 | .022 | 31-37 | 153624 | Ball |
| De Luxe 6 Man | HK | 115 | In Head | 3 1/2 x 3 3/4 | 216.5 | 6.6 | 92 @ 3400 | 176 @ 1500 | 14 | .035 | .022 | 31-37 | 153624 | Ball | |
| De Luxe 6 Auto | HK | 115 | In Head | 3 9/16 x 3 15/16 | 235.5 | 6.7 | 105 @ 3600 | 193 @ 2000 | 14 | .035 | .022 | 31-37 | 153624 | Ball | |
| 1951 | Special 6 | JJ | 115 | In Head | 3 1/2 x 3 3/4 | 216.5 | 6.6 | 92 @ 3400 | 176 @ 1500 | 14 | .035 | .022 | 31-37 | 153624 | Ball |
| De Luxe 6 Man | JK | 115 | In Head | 3 1/2 x 3 3/4 | 216.5 | 6.6 | 92 @ 3400 | 176 @ 1500 | 14 | .035 | .022 | 31-37 | 153624 | Ball | |
| De Luxe 6 Auto | JK | 115 | In Head | 3 9/16 x 3 15/16 | 235.5 | 6.7 | 105 @ 3600 | 193 @ 2000 | 14 | .035 | .022 | 31-37 | 153624 | Ball | |
| 1952 | Special 6 | KJ | 115 | In Head | 3 1/2 x 3 3/4 | 216.5 | 6.6 | 92 @ 3400 | 176 @ 1500 | 14 | .035 | .022 | 31-37 | 153624 | Ball |
| De Luxe 6 Man | KK | 115 | In Head | 3 1/2 x 3 3/4 | 216.5 | 6.6 | 92 @ 3400 | 176 @ 1500 | 14 | .035 | .022 | 31-37 | 153624 | Ball | |
| De Luxe 6 Auto | KK | 115 | In Head | 3 9/16 x 3 15/16 | 235.5 | 6.7 | 105 @ 3600 | 193 @ 2000 | 14 | .035 | .022 | 31-37 | 153624 | Ball | |