[Smallblock454]

Originally Posted by NewArt

Thanks JFP!
Geometry quiz: so about how many degrees? 120? (1/3 of a revolution).
(4 stroke engine = 720 degrees for each cycle / 6 cylinders = 120)
Seriously, this way I would only have to balloon test once (for the first cylinder) to know which is the compression stroke on the other cylinders.

This is a diagramm of the firing order:



Hope that answers your question.

Regards Markus

@Steve Thinker: thanks for explanation