Description

This article is from the The Monster Truck FAQ, by Jeff Hawkins with numerous contributions by others.

09 How big are those engines?

A. The engine in a MTRA certified truck must be no larger than 575 cubic
inches! This refers to the bore or barrel size x the stroke or travel
length!

The actual engine displacement calculation formula is:

Bore in inches (Cylinder Diameter)
Bore Again
X Stroke in inches

result
X 0.7854 (Factor to account for the cylindrical shape)

result
X number of cylinders

result Engine displacement in cubic Inches

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