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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. | | |||||
300AT | 65 | 15 | 20 | 60 | 260 | 260 | 203 | 203 | .412" | .412" | .020" | .027" | H | H | Torque/ economy. |
422A | 64 | 20 | 24 | 60 | 264 | 264 | 208 | 208 | .414" | .414" | .026" | .044" | H | H | Very mild. |
310 | 68 | 20 | 28 | 60 | 268 | 268 | 212 | 212 | .445" | .445" | .030" | .054" | H | H | Mild 1800-5800 rpm. |
594 | 71 | 23 | 31 | 63 | 272 | 272 | 224 | 225 | .460" | .460" | .040" | .080" | H | H | 2200-6000 rpm. |
592 | 79 | 25 | 31 | 71 | 284 | 284 | 222 | 222 | .447" | .447" | H | H | |||
682 | 78 | 33 | 30 | 81 | 291 | 291 | 230 | 230 | .450" | .450" | H | H | 3000-7500 rpm. | ||
414C | 82 | 48 | 48 | 82 | 310 | 310 | 252 | 252 | .484" | .484" | .092" | .117" | H | H | Drag 4000-8000 rpm. |
966 | 71 | 23 | 31 | 63 | 274 | 274 | 230 | 230 | .480" | .480" | H | H | Good fast road. | ||
Notes -
- Some of the 318 engines before 1967 had different valve positions.
- Care must be taken to install the correct camshaft as some 340 c.i and all 360 c.i engines have solid followers.