I have an old Continental Operators's handbook (for the E-225 series),
which shows #1 as rifgt rear, #6 is left front. I doubt that Continental
has changed their numbering system on the O-470 series.

According to my A&P at the time, right front was #1 on my Continental
O-200.

Lycomings have the numbers stamped right in the engine case. Don't
Continentals?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"