.

Cam Grind Type:MECHANICAL 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: 285/290
Dur @ .050 Int-Exh: 245/255
Lift 1.5 - 1.5 Int/Exh: 585/600
Lift 1.6 -1.6 Int/Exh:
Lift 1.7 -1.7 Int/Exh:
Lobe Center: 106
Valve Lash: .018-.020
RPM Range: 2500-6800
Description: Rough idle, good mid range torque,10.5:1 advised,oval track/bracket racing.