Similar to stock with some extra lift resulting in the same driveability as original. Works well with low compression engines and smaller displacements. TA 1440 Stage 1 springs recommended. Stock converter and gears ok. Good idle.
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 1.40 RATIO:
IN: .450”
EXH: .466” - TA ROLLERS 1.60 RATIO:
IN: .464”
EXH: .481”
DURATION
- AT .050
IN: 210
EXH: 215 - ADVERTISED
IN: 260
EXH: 262
- LOBE CENTER: 110
- POWER RANGE: 1500-5000
