| Part Number: | 449601 | Grind Number: | HR-224/339-2S-12 |
| Engine Identification: | | | | Start Yr. | End Yr. | Make | Cyl | Description | | 1985 | Up | FORD-MERCURY | 8 | FAIR IDLE, MODERATE PERFORMANCE USAGE, GOOD MID-RANGE TORQUE AND HP, MILD BRACKET RACING, AUTO TRANS W/2500+ CONVERTER, ALSO SUPERCHARGED AND/OR NITROUS, 3000-3800 CRUISE RPM, 9.0 TO 10.75 COMPRESSION RATIO ADVISED. BASIC RPM 2500-6000 | | Engine Size | Configuration | | | 302 C.I. | V | |
|
| Valve Setting: | Intake | .000 | Exhaust | .000 | HOT |
|
| Lift: | Intake @Cam | 339 | @Valve | 542 | All Lifts are based
on zero lash and theoretical rocker arm ratios. | | Exhaust @ Cam | 352 | @Valve | 563 | | Rocker Arm Ratio | 1.60 | | |
|
| CamTiming: | TAPPET | @.004 | | Lift: | | Opens | Closes | ADV Duration | | Intake | 32 BTDC | 74 ABDC | 286 | | Exhaust | 80 BBDC | 34 ATDC | 294 |
|
| Spring Requirements: Triple Dual Outer Inner | | Part Number | 99838 | | Loads | Closed | 110 | LBS@ | 1.688 | or | 1 11/16 | | Open | 348 | LBS@ | 1.148 | | |
| | Recommended RPM range with matching components | | Minimum RPM | 2500 | | Maximum RPM | 6000 | | Valve Float | 7000 |
|
| CamTiming: | TAPPET | @.050 | | Lift: | | Opens | Closes | Max Lift | Duration | | Intake | 5 BTDC | 39 ABDC | 107 | 224 | | Exhaust | 53 BBDC | (1) BTDC | 117 | 232 |
|
| Remarks: | | FIRING ORDER: 1-3-7-2-6-5-4-8 |
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Bell housings
Air & Fuel