Cam timing, valve springs, pushrod length, P2V clearance, degreeing, head flow, and head milling.
Calculators in this category
Camshaft Selector — What Cam Do I Need? Duration, LSA & Lift Calculator — Free camshaft selector: enter your engine, compression, transmission, and goal and get recommended duration @ 0.050", lobe separation angle (LSA), and valve lift — plus real matching cams from COMP, Brian Tooley Racing, Texas Speed, Lunati, Crane, Howards, Edelbrock & Summit, estimated powerband, and idle character. Advanced mode adds ported head flow, dynamic compression, and target-RPM inputs. Uses David Vizard's LSA method.
Cam Degreeing Calculator — 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 — 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 — Calculate chamber volume change, compression ratio shift, and intake manifold alignment when milling cylinder heads.