The original “Gibson” Cam. High End Street or Race cam. Strong mid-range, top end power. TA roller rockers and valve springs recommended. 3000-3500 stall converter recommended. Rough idle. 10:1 or more CR.

Idle Quality:

Smooth Idle - just like stock
Good Idle - mild lump, but doesn’t impair driveability
Moderate Idle - nice performance sound
Fair Idle - heavy lump
Rough Idle - very lumpy race type idle
 

VALVE LIFT 

• STOCK 1.55 RATIO:
   IN: .514”
   EXH: .504”
• TA ROLLERS 1.60 RATIO:
   IN: .535”
   EXH: .520”

DURATION

• AT .050
   IN: 243
   EXH: 247
• ADVERTISED
   IN: 296
   EXH: 308

• LOBE CENTER: 107
• POWER RANGE: 3000-6000