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Cam Grind Type: HYDRAULIC ROLLER CAMS
Application: PONTIAC 55-81 265-287-301(4.9L)-316-326-347-350-389-400(6.6L)-421-428-455
Block Size: SB
Engine Make: PONTIAC
# Of Cylinders: 8
Manufactured In Year: 55 - 81
Cubic Inch Size / Volume: 265-287-301-316-326-347-350-389-400-421-428-455 | 4.9L , 6.6L
Additional Qualifier: 301(4.9L) and 400(6.6L) ONLY
Brand Code: Herbert Performance Cams
Dur Int-Exh: 275/280
Dur @ .050 Int-Exh: 210/215
Lift 1.5 - 1.5 Int/Exh: 480/480
Lift 1.6 -1.6 Int/Exh:
Lift 1.7 -1.7 Int/Exh:
Lobe Center: 112
Valve Lash: HYD
RPM Range: 2500-6200
Description: Designed for hot street and mild street/strip applications. Delivers strong mid-range torque and improved upper-RPM horsepower. Features a noticeable performance idle with a more aggressive powerband than a mild street cam. A performance torque converter, appropriate rear gearing, and supporting engine modifications are recommended for optimal performance.
Cam Options:
Universal Accessories:
Valid Accessory Kits:
Additional Notes: