Stronger intake side than TA 284-94F. TA roller rockers and valve springs required. Rough idle. 11:1 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: .550”
   EXH: .558”
• TA ROLLERS 1.60 RATIO:
   IN: .568”
   EXH: .576”

DURATION

• AT .050
   IN: 252
   EXH: 263
• ADVERTISED
   IN: 284
   EXH: 296

• LOBE CENTER: 108
• POWER RANGE: 3500-6500