Bore and Stroke Calculator
Analyze bore/stroke ratio and engine characteristics
Enter Dimensions
Bore/Stroke Ratio
1.149
Oversquare Engine
Dimensions
Bore4.000" / 101.60 mm
Stroke3.480" / 88.39 mm
Single Cylinder Volume43.73 ci
Performance Characteristics
Higher RPM potential, better breathing, typically more horsepower oriented
Optimal RPM Range4000-7000+ RPM
Mean Piston Speed @6000 RPM3480 ft/min
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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.