SPA 6hours

[Roger King]

Sixties-onwards Fords used two different firing orders. The early SBFs, and therefore all 289 Cobras, had this firing order:
1-5-4-2-6-3-7-8
The 302HO/5.0L and 351W firing order is:
1-3-7-2-6-5-4-8
-these were achieved with the same crank but different cams. Ford's reasoning was that this FO put less strain on the crank. The different sounds are quite distinctive.
Ford FEs, 429s and 460s were the same as the early small-block Windsors.
All Ford pushrod V8s (not the flatheads) number the cylinders 1-4 on the RHS from the front, 5-8 on the LHS.

Flat-plane cranks are simpler to make, and were around before cross-plane cranks. The cross-plane crank was developed to reduce vibration on larger-displacement engines with flat-plane cranks (the heavy bits flying around are spread more around the rotation of the crank, rather than at opposite sides). The trade-off is that cross-plane cranks are heavier and less able to rev as high as the flat-planes.

[Paul Blore]

Sixties-onwards Fords used two different firing orders. The early SBFs, and therefore all 289 Cobras, had this firing order:
1-5-4-2-6-3-7-8
The 302HO/5.0L and 351W firing order is:
1-3-7-2-6-5-4-8
-these were achieved with the same crank but different cams. Ford's reasoning was that this FO put less strain on the crank. The different sounds are quite distinctive.
Ford FEs, 429s and 460s were the same as the early small-block Windsors.
All Ford pushrod V8s (not the flatheads) number the cylinders 1-4 on the RHS from the front, 5-8 on the LHS.

Flat-plane cranks are simpler to make, and were around before cross-plane cranks. The cross-plane crank was developed to reduce vibration on larger-displacement engines with flat-plane cranks (the heavy bits flying around are spread more around the rotation of the crank, rather than at opposite sides). The trade-off is that cross-plane cranks are heavier and less able to rev as high as the flat-planes.

Isn't that what I said?

[Roger King]

Not exactly!

[Migge]

Thanks for the additional information, back to firing order 14527638. Ever heart of a RV8 with that order?