Very strong bracket cam, limited street use. TA roller rockers, valve springs required. Makes lots of HP with relatively low compression. 3500+ stall converter recommended.  Rough idle. 10.25:1 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: .558”
   EXH: .558”
• TA ROLLERS 1.60 RATIO:
   IN: .576”
   EXH: .576”

DURATION

• AT .050
   IN: 255
   EXH: 265
• ADVERTISED
   IN: 305
   EXH: 315

• LOBE CENTER: 110
• POWER RANGE: 3500-6500