1,3,7,2,6,5,4,8 Counter-clockwise.
1-3-7-2-6-5-4-8
18436572
If this is a 400 cu inch motor the order is 13726548. If this is a 460 cu inch motor the order is 15426378. The distributer rotates counterclockwise
counter clockwise 13726548--------------------------------------------------- Ford Firing Orderhttp://www.aa1car.com/library/ford_firing_orders.htm
13726548 counter clockwise
The 400 Ford has only one firing order and it is 1-3-7-2-6-5-4-8 which is the same firing order as the 302 HO, and 351. Rotor turns counterclockwise.
1-3-7-2-6-5-4-8
1 8 4 3 6 5 7 2
Counter clockwise on the Ford 400 cubic inch - V8 - engine distributor cap ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 )
Chrysler didn't have a 400 Cu In motor in 1963. The 400 didn't come along until 1972. So with that in mind, I suspect you either have a 383 or quite possibly a 400 that someone swapped in. In any event, the firing order for all Mopar V-8's (with the exception being reverse firing marine engines), is a counter clockwise rotation of 1-8-4-3-6-5-7-2.
The firing order for the Pontiac 400 engine is that the small block powers the big block.
18436572 clock wise