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

KitCarlson said

Likely distributor 180 degrees out. Crank makes two revolutions per one distributor rotation. TDC can be for #1 or #6, if for #1, make sure valves are closed, or at top of compression stroke.

Click to expand...

Agreed Mr Carlson dist is 180* out.

hahaha,(laughing at Myself) had to brush off the cobwebs on basic engine mechanical...
90* rod journal crankshaft, =

1 & 2 are paired
3 & 4 are paired
5 & 6...
7 & 8...

Cam lobe placement determines firing order so cyl #6 & #1 would be on compression
stroke, cyl # 5 would be exhaust stroke.

As far as I know mopar small block cams have always used the same cam lobe placement
for #1 cyl coupled with 'indexed' ignition components.

I am uneducated on mopars marine cam configurations however.