I am chasing a firing order and tune up guide for the above.
I think in America this came out as a Dodge Dart

Anyone know about this?

:banghead:

Valiant was the Plymouth version of the Dodge Dart. I have an old Chilton's manual and will try to remember to look it up when I get home.

I think there was an Australian model that was different from the American model so depending on what car you have, my info may or may not be correct. I don't know if they had the same engines. The US one was a slant 6 225 but may still have engineering differences from non-US.

Pretty sure it was 1-5-3-6-2-4. Try also the slantsix.com forum. Probably find lots of help there.

That is spot on mate
thanks muchly