Lift Duration Calculator
Analyze valve lift and lift-to-duration ratio
Cam Specifications
Gross Valve Lift
0.488"
12.38 mm
Lift Analysis
Lobe Lift0.325"
x Rocker Ratio1.5:1
= Gross Valve Lift0.488"
Net Lift (with 0.025" lash)0.463"
Lift/Duration Analysis
Lift/Duration Ratio2.18
Street performance - Good balance of power and drivability
Est. Peak Power RPM4720 RPM
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.