Original H-O's
Intake Stroke Calculator

The Intake Stroke Calculator estimates the "cylinder fill" dry air amount (Fill) and volumetric efficiency (VE) based upon engine parameters and components. Compression ratio, inlet tract effects due to intake airflow, manifold and carburetor are included in the calculation.

NOTE 1: Click the Toggle button next to the Calculate button to activate access to detailed explanations of the line items. Hover the mouse indicator over the column name to see the explanation. Click the Toggle button again to deactivate.


Carb CFM:


(hover mouse cursor over title for more info)
RPM
Mach
VE
CFM
BCF
T-B
OLap
LIVC
Fill
Some useful results
Avg
valve
lift
Max
coeff
dischg
Max
Volume
Effic
@ RPM @ Mach Avg
Area
flow