Ray, Like almost all online sixes the firing order is 1-5-3-6-2-4. I can
t answer the rest of your questions. We had one in a grain '48 truck and it handled the trips from the wheat field to the grain elevator better than the newer '52 with a flathead v8. These were far better engines that Henry wanted people to know. He, like many hot rodders, was overly protective of the flathead v8.
