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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. | | |||||
972 | 79 | 40 | 38 | 71 | 299 | 289 | 232 | 222 | .469" | .475" | .020" | .020" | 2300-6000 rpm. | ||
729 | 71 | 39 | 35 | 67 | 290 | 282 | 250 | 242 | .592" | .582" | .022" | .022" | 3600-7000 rpm needs compression. | ||
1005C | 76 | 44 | 44 | 76 | 300 | 300 | 260 | 260 | .618" | .618" | .022" | .022" | 4000-7500 rpm. | ||
673 | 81 | 49 | 44 | 76 | 300 | 310 | 260 | 270 | .625" | .625" | .022" | .022" | |||
486C | 82 | 44 | 46 | 80 | 306 | 306 | 274 | 274 | .560" | .560" | .025" | .025" | Impresive raod/drag. | ||
467B | 88 | 52 | 52 | 88 | 320 | 320 | 278 | 278 | .670" | .670" | .026" | .026" | 4600-8000 rpm. | ||
876C | 83 | 39 | 42 | 70 | 302 | 292 | .548" | .548" | .028" | .028" | Single carb. speedway | ||||
1002 | 67 | 39 | 34 | 62 | 330 | 316 | 286 | 276 | .615" | .615" | .028" | .026" | Valve timing @ 0.050" lift. | ||
645C | 78 | 42 | 42 | 78 | 300 | 300 | 278 | 278 | .600" | .600" | .024" | .022" | |||
915C | 80 | 52 | 58 | 80 | 312 | 312 | 284 | 284 | .660" | .660" | .028" | .026" | |||
1008B | 81 | 45 | 45 | 81 | 306 | 306 | 280 | 280 | .625" | .625" | .025" | .025" | |||
459 | 92 | 56 | 56 | 92 | 328 | 328 | 288 | 288 | .669" | .669" | .026" | .026" | 5200-9000 rpm. | ||
891 | 77 | 39 | 39 | 61 | 286 | 280 | .639" | .625" | Valve timing @ 0.050" lift. | ||||||
Notes -
- Steal roller cams available in any format i.e fireing order.
- Bronze distributor /oil pump gear required.
- More roller profiles available on request.
- Combinations of profiles available at no extra cost.