Believe it or not firing order can be changed. Not to the 1 2 3 4 5 6 7 8 but it can be changed. I.e. marine engines. There are several modifications to marine engines one of which includes a change in firing order and the direction of which the motor is turning. I also dabled in Fords. I put a 351 windsor cam in a 302. It all works but the firing order is different between the two motors. Really pissed of the next mechanic that worked on the motor too
He couldn't get that thing fired up for nothing using the 302 firing orfer.
