*Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16'' wide x 7/64'' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.
PERFORMANCE USAGE, GOOD MID AND UPPER RPM TORQUE AND HP, BRACKET RACING, AUTO TRANS W/RACE CONVERTER, 11.5 TO 12.5 COMPRESSION RATIO ADVISED.
| Grind Number: | F-256/3634-2S-8 |
| Operating Range: | 4200-7000 RPM |
| Duration Advertised: | 292° Intake / 300° Exhaust |
| Duration @ .050'' Lift: | 256° Intake / 264° Exhaust |
| Valve Lift w/1.7 Rockers: | .618'' Intake / .638'' Exhaust |
| Lobe Separation Angle: | 108° |
| Max Lift Angle: | 105° ATDC Intake / 111° BTDC Exhaust |
| Open/Close @.050'' Cam Lift: | Intake - 23° BTDC (opens) / 53° ABDC (closes)
Exhaust - 63° BBDC (opens) / 21° ATDC (closes) |
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