Lobe Separation Calculator

Calculate lobe separation angle from centerlines

Lobe Centerlines

Intake Centerline (degrees ATDC)

Exhaust Centerline (degrees BTDC)

LSA = (Intake CL + Exhaust CL) / 2

110.0 degrees

4.0° Advanced

Intake Centerline106° ATDC

Exhaust Centerline114° BTDC

Cam Advance4.0°

Moderate-narrow LSA - Good balance of low and mid-range power

Idle QualityNoticeable lope

Expected Vacuum12-15 in/Hg

Best ApplicationStreet performance, daily drivers with power

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.