| Part Number: | 10313 | Grind Number: | 294-304 H14 |
| Engine Identification: | | | | Start Yr. | End Yr. | Make | Cyl | Description | | 1968 | Up | CHEVROLET | 8 | ROUGH IDLE, PERF. USAGE, GOOD MID-RANGE HP, BRACKET RACING, AUTO TRANS W/3000+ CONVERTER, 3800-4200 CRUISE RPM, 10.0 TO 11.5 COMP. RATIO ADV. BASIC RPM 3200-6200 | | Engine Size | Configuration | | | 396-454 C.I. | V | |
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| Valve Setting: | Intake | .000 | Exhaust | .000 | HOT |
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| Lift: | Intake @Cam | 3347 | @Valve | 569 | All Lifts are based
on zero lash and theoretical rocker arm ratios. | | Exhaust @ Cam | 350 | @Valve | 595 | | Rocker Arm Ratio | 1.7 | | |
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| CamTiming: | TAPPET | @.004 | | Lift: | | Opens | Closes | ADV Duration | | Intake | 34 BTDC | 80 ABDC | 294 | | Exhaust | 87 BBDC | 37 ATDC | 304 |
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| Spring Requirements: Triple Dual Outer Inner | | Part Number | 99893 | | Loads | Closed | 120 | LBS@ | 1.875 | or | 1 7/8 | | Open | 336 | LBS@ | 1.315 | | |
| | Recommended RPM range with matching components | | Minimum RPM | 3400 | | Maximum RPM | 6400 | | Valve Float | 6600 |
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| CamTiming: | TAPPET | @.050 | | Lift: | | Opens | Closes | Max Lift | Duration | | Intake | 10 BTDC | 48 ABDC | 109 | 238 | | Exhaust | 63 BBDC | 5 ATDC | 119 | 248 |
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Bell housings
Air & Fuel