Engin Designer is a solver based power prediction tool that provides calculations for the following engine design parameters

Intake Manifold Design:
Intake manifold runner length.
Intake port cross sectional area CSA.
Intake manifold plenum volume.
Intake manifold runner taper.
Intake manifold plenum volume.
Intake manifold runner Helmholtz volume.
Intake manifold plenum Helmholtz volume.
Intake manifold runner volume.
Intake port volume.
Camshaft timing events.
Calculate horsepower and torque.
Intake manifold harmonic

Cylinderhead Design:
Intake port throat velocity.
Intake port choke velocity.
Intake port size.
Intake port area.
Exhaust port throat velocity.

Header Design:
Header tube diameter.
Header tube length.
Head collector diameter.

Weather correction:
Temperature
Altitude
Humidity
Barometric pressure
Air Density

Engine Performance:
RPM of peak horsepower
RPM of Peak Torque
Peak horsepower
Peak torque
Volumetric Efficiency VE

Short Block:
Bore
Stroke
Rod Length
Rod Ratio

Camshaft:
Duration
Lobe center
Lift