Cam, Valvetrain and Cylinder Head Calculators

Cam timing, valve springs, pushrod length, piston-to-valve clearance, degreeing, head flow and head milling calculators.

Calculators in this category

• Camshaft Selector — What Cam Do I Need? — Enter your engine, compression, transmission and goal. Get a recommended duration at 0.050 inch, LSA and lift, with matching real cams.
• Advanced Cam Timing Calculator — Full cam analysis: valve events, overlap, recommended LSA, dynamic compression ratio and a rocker lift table. Works from the numbers on the cam card.
• Cam Degreeing Calculator — Intake Centerline & TDC — Step-by-step cam degreeing guide with intake centerline verification, advance/retard calculation, and dial indicator math.
• Valvetrain RPM Builder — Match cam, rockers, springs, and target RPM as a complete system. Valve float estimation, RPM safety graph, and cascade warnings.
• Valve Spring Calculator — Validate valve spring specs for your cam profile. Seat pressure, open pressure, coil bind clearance, and spring rate analysis.
• Valve Shim Calculator — Bucket & Shim Clearance Tool — Calculate replacement shim sizes for shim-over-bucket and shim-under-bucket valvetrains. Nearest available shim lookup.
• Pushrod Length Calculator — Correct pushrod length after head milling, cam swaps, or rocker changes. Stock lengths for SBC, BBC, LS, SBF, and Hemi.
• Piston-to-Valve Clearance Calculator — Kinematic P2V simulation across the overlap region. Engine platform presets, cam advance slider, and interference warnings.
• Cylinder Head Flow / CFM to HP Calculator — Convert flow bench CFM to horsepower potential. Flow coefficient, intake/exhaust ratio, port velocity, and comparison against popular heads.
• Head Milling Calculator — CR, Cam Timing & Clearance — Calculate chamber volume change, compression ratio shift, and intake manifold alignment when milling cylinder heads.

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