Firing order for RH rotation

PCM did put the correct FO on the tag, and they would have put it on right side up! They used to goop over the standard rotation FO cast into the intake on some engines, but not all... Nothing rotation specific about an intake obviously- so of course it's going to be the standard gm piece with the LH order on it. I've seen LH balancers installed on RH engines before (the only difference being the timing marks) by nothing nearly as late as the 80's... My guess is that someone installed an automotive balancer on there at some point.

Mechanics unfamiliar with marine engines screw up our reverse rotation engines all the time- people come here with LH starters and firing orders on a regular basis tying to figure out why their boats won't run. I don't have high expectations of most "mechanics" but I would think a CCFan should know a little better. Cc's with factory standard rotation engines from the 60's through '89 are VERY rare. Reverse rotation 454's spin the cranks one way and the cam the other due to their gear on gear timing set. The cams are sometimes called "standard rotation reverse fire" for they spin the same direction as a lefty and allow the use of a standard distributor/gear, but the firing order is obviously backwards. It's been discussed here many times, sounds like you're up to speed now though!

gun-driver wrote: If you go to the reference section under manuals towards the bottom of the page there is a PCM manual that encompass' both Ford and Chevy motors in there you will find all the info you need.

True, but the confusion caused by the firing order markings on the intake manifold and timing tab aren't mentioned anywhere in the manual. Seems like PCM should have made a label for RH engines as part of their process. Even a "mechanic" (which I am not) got the wires screwed up, so I thought posting it might help someone doing an internet search.
I knew something was fishy when I saw "after" TDC come up before "before" on the timing tab when using the starter to find TDC when installing the distributor. My mind just couldn't grasp that the steel stamped tab was wrong for the RH engine, and the intake manifold was cast with only LH firing order.
Guess you can't believe everything you read!

If you go to the reference section under manuals towards the bottom of the page there is a PCM manual that encompass' both Ford and Chevy motors in there you will find all the info you need.