Recommended for street or strip. Increased midrange power. TA roller rockers or adjustable pushrods required. Needs notched pistons. Fair 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: .511”
EXH: .511” - TA ROLLERS 1.60 RATIO:
IN: .528”
EXH: .528”
DURATION
- AT .050
IN: 248
EXH: 254 - ADVERTISED
IN: 288
EXH: 298
- LOBE CENTER: 110
- POWER RANGE: 3000-6000
