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Profile | Advertised Timings | DURATION | VALVE LIFT | TAPPET | REMARKS | ||||||||||
Ex Op. | Ex Cl | In Op. | In Cl | Advertised | @ 0.050” | Gross. | @ T.D.C. | Ex. | In. | ||||||
737 | 60 | 21 | 23 | 60 | 261 | 261 | 210 | 208 | 0.295” | 0.310” | 0.008” | 0.006” | S.T.D | ||
756 | 52 | 25 | 25 | 52 | 257 | 257 | 215 | 215 | 0.352” | 0.352” | 0.008” | 0.006” | Torque Imp. | ||
514A | 70 | 31 | 33 | 70 | 281 | 283 | 228 | 228 | 0.310” | 0.310” | 0.008” | 0.006” | Stage 1 | ||
536C | 74 | 38 | 40 | 72 | 292 | 292 | 232 | 232 | 0.350” | 0.350” | 0.008” | 0.006” | 258 @ 0.040” | ||
514B | 74 | 46 | 48 | 72 | 300 | 300 | 240 | 240 | 0.350” | 0.350” | 0.008” | 0.006” | |||
723C | 81 | 45 | 45 | 81 | 306 | 306 | 246 | 246 | 0.385” | 0.385” | 0.008” | 0.006” | 262 @ 0.040” | ||
1227C | 85 | 55 | 59 | 81 | 320 | 320 | 257 | 257 | 0.400” | 0.400” | 0.008” | 0.006” | |||
931C | 82 | 50 | 54 | 78 | 312 | 312 | 248 | 248 | 0.425” | 0.425” | 0.008” | 0.006” | 272 @ 0.040” | ||
Notes: -Same profiles can be used on both 750, 1100 & 1300cc engines.
-Valve springs should be changed above 0.370” lift.
-Some profiles require modified rocker pads.
-This is only a small selection of our profiles.