Firing Order

Hi,

Are you asking if a LH Turner and a RH Turner have the same firing order?

I would say unlikely.

The firing order I can find online for all 351's is 1-3-7-2-6-5-4-8

http://www.carmemories.com/cgi-bin/viewzoom.cgi?image=2055

In which case the opposite turning engine should have a firing order of:

1-8-4-5-6-2-7-3

(Which means the flywheel turns clockwise when viewed from behind the engine.)

Before you replace a right hand engine with a left or vice versa, you should check your transmissions.
If you have older Borg Warner 71 or 72 series transmssions or Paragons, you cannot change the engine rotation. The pump can be re-indexed for an opposite rotation engine but "forward" will be the same rotation as the crankshaft. You would need two right or two left hand props and the boat would not handle correctly.
If you try to get around this by reversing the control cable so that forward is reverse and you run that transmission at full load in reverse it will blow up catastrophically in short order.
Switching engine rotation is seldom a good idea because so many other things are involved.
If you have late model bi-directional transmissions, you might be ok but that is not likely because boats that have those already have two left hand engines.

if that is a single engine boat with a Volvo outdrive it is a non issue.
If it is a single engine (or twin) with Merc Alpha 1's there are similar problems.

I am curious why you are doing this since left hand engines are so much easier to come by than right hand engines and no conversion is needed.

If you had to change the prop then you are still running the transmission in fwd and should be ok.
And I see, you have a single engine boat. When I first read your post, I thought you were doing this on a boat with twins.
On a Ford 351 you can as the other poster said, move the "1" to the other end of the firing order, read it backwards and that will be correct.
Glad it worked out!

You don't have to move the 1

This firing order will work too:

5-6-2-7-3-1-8-4