TorqueList Garage · Workshop Companion

Engine Builder Calculators

A permanent, manufacturer-neutral companion page for printed TorqueList references. Enter your engine's measured geometry; the page calculates locally without uploading dimensions or requiring a purchase.

Engine geometry & static compression

Starting values are examples only, not specifications for any engine. Use measured dimensions. Dish and valve relief add clearance volume; dome subtracts it. Deck means piston below deck at top dead center. Calculations are for one cylinder except total displacement.

Geometry

Bore (in)Stroke (in)CylindersConnecting rod length (in)Engine speed (RPM)

Compression inputs

Combustion chamber (cc)Gasket bore (in)Compressed gasket thickness (in)Piston below deck (in)Dish + valve relief volume (cc, negative if dome)

Static compression

9.63:1

Displacement

349.8 ci

Displacement

5.733 L

Mean piston speed

3,480 ft/min

Rod-to-stroke ratio

1.638

Clearance volume

83.02 cc / cyl

Static compression = (swept + clearance) ÷ clearance. Mean piston speed = 2 × stroke (feet) × RPM. These calculations do not predict fuel octane, dynamic compression, safe RPM, engine strength, horsepower, or whether a combination will clear mechanically.

Always verify clearances and fastener specifications against the exact engine, machining measurements and approved technical sources. Calculated geometry is not an assembly approval.