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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. | | |||||
155C | 57 | 15 | 15 | 57 | 252 | 252 | 223 | 223 | .384" | .384" | .008" | .006" | Early V12. | ||
142 | 60 | 30 | 30 | 60 | 270 | 270 | 237 | 237 | .382" | .382" | .130" | .180" | .008" | .006" | 'D' type. |
663C | 70 | 22 | 26 | 66 | 272 | 272 | 244 | 244 | .420" | .420" | .050" | .112" | .018" | .016" | Street 2200-6000 rpm. |
877C | 70 | 30 | 32 | 68 | 280 | 280 | 241 | 241 | .425" | .425" | .070" | .130" | .008" | .008" | |
490A | 70 | 22 | 26 | 66 | 272 | 272 | 243 | 243 | .440" | .440" | .018" | .016" | |||
137 | 75 | 35 | 39 | 71 | 290 | 290 | 258 | 258 | .410" | .410" | .120" | .170" | .010" | .008" | Fast touring. |
155B | 62 | 20 | 20 | 62 | 304 | 304 | 262 | 262 | .395" | .395" | .008" | .008" | Competition. | ||
133 | 78 | 42 | 45 | 75 | 300 | 300 | 270 | 270 | .421" | .421" | .168" | .190" | .010" | .008" | Competition. |
Notes -
- For larger profiles, see Ford O.H.C section.
- When ordering please specify if engine is 6 or 12 cylinder.