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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. |
440T | 70 | 20 | 25 | 65 | 270 | 270 | 212 | 212 | .435" | .435" | .035" | .040" | H | H | mILD 2300-6500 RPM. |
343 | 75 | 20 | 30 | 70 | 275 | 280 | 218 | 220 | .435" | .435" | .028" | .057" | H | H | 2200-5500 rpm. |
310 | 68 | 20 | 28 | 60 | 268 | 268 | 212 | 212 | .445" | .445" | .029" | .054" | H | H | Strong 2800-4200 rpm. |
594 | 71 | 23 | 31 | 63 | 274 | 274 | 225 | 225 | .459" | .459" | .039" | .057" | H | H | Road 2300-6500 rpm. |
433 | 70 | 24 | 29 | 69 | 284 | 278 | 221 | 232 | .441" | .441" | H | H | Road 2800-6500 rpm. | ||
851A | 70 | 34 | 34 | 70 | 284 | 284 | 231 | 231 | .480" | .480" | H | H | 3200-6800 rpm. | ||
140HT | 75 | 32 | 37 | 71 | 287 | 287 | 240 | 240 | .447" | .447" | .072" | .092" | H | H | Speedway- single carb. |
681 | 74 | 41 | 45 | 72 | 297 | 240 | 240 | .408" | .408" | H | H | 3500-7500 rpm. | |||
376 | 82 | 40 | 48 | 80 | 308 | 308 | 242 | 242 | .456" | .456" | .059" | .093" | H | H | Fast road/ drag. |
Notes -
-Rregrinds available for most profiles.
- For larger profiles see Ford or Holden 6 cylinder.
- Valve springs require replacing over 0.450" lift.