Camshaft events

Duration, LSA, and intake centerline. Pull static CR from compression; saves IVC for dynamic CR.

Shared build memory

Cam events + optional static CR / peak RPM for context. Not rear gears or springs.

Nothing related saved yet for this tool. Fill fields and hit Save, or finish another related calculator first.

Intake duration adv (°)Exhaust duration adv (°)Intake duration @.050 (°)Exhaust duration @.050 (°)Lobe separation LSA (°)Intake centerline ICL (°)Often LSA − advanceStatic CR (optional)Pull from compression calculatorPeak RPM (context)

Valve events (from advertised duration + ICL)

Overlap ≈ 53.0° adv · 7.0° @.050

IVO 29.0° BTDC · IVC 61.0° ABDC
EVO 72.0° BBDC · EVC 24.0° ATDC
Derived ECL ≈ 114.0° (assumes split about LSA)

Aggressive overlap → needs cam, gear, converter, and exhaust match.

LSA is ground into the core — multi-key bushings advance/retard the whole cam, they do not change LSA. IVC is saved for the dynamic compression tool. Always degree to the card.