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| Profile Number | Advertised Timings | DURATION | VALVE LIFT | TAPPET CLEARANCE | REMARKS | ||||||||||
| Ex Op. B.B.D.C. | Ex Cl A.T.D.C | In Op. B.T.D.C. | In Cl A.B.D.C | Advertised | @ 0.050" | Gross. | @ T.D.C. | Ex. | In. | | |||||
| 511 | 43 | 4 | 12 | 42 | 227 | 234 | 206 | 206 | 0.390" | 0.408" | 0.010" | 0.008" | STD/One ring on cam | ||
| 104 | 65 | 25 | 25 | 65 | 270 | 270 | 215 | 215 | 0.395" | 0.395" | 0.038" | 0.048" | 0.012" | 0.010" | Mild Road |
| 240 | 70 | 30 | 30 | 70 | 280 | 280 | 218 | 218 | 0.395" | 0.395" | 0.040" | 0.053" | 0.012" | 0.010" | 2500 - 5500 RPM |
| 640 | 65 | 25 | 25 | 65 | 280 | 280 | 220 | 220 | 0.420" | 0.420" | 0.030" | 0.050" | 0.012" | 0.010" | Strong Mid Range |
| 424 | 71 | 25 | 31 | 70 | 276 | 281 | 220 | 235 | 0.420" | 0.420" | 0.043" | 0.062" | 0.012" | 0.010" | |
| 140 | 70 | 37 | 37 | 71 | 287 | 288 | 240 | 240 | 0.418" | 0.418" | 0.072" | 0.091" | 0.012" | 0.010" | Very Nice on Twin Carbs |
Notes -
* Camshafts supplied without camgear, please specify if required.
* Please enquire if larger profiles required.
