spark plugs for point judjing

[Kube]

Originally Posted by houseof34s

what is the correct champion spark plug# for a 1940 ford flathead V-8 engine?

H10 with TWO rib. The so called "coke bottle" plug.
Five rib plugs did not come out until later and when installed in to a 1940 Ford should receive a point deduction of one point per incorrect plug.

[houseof34s]

Where can Champion H10 two rib black bottom plugs be purchased?

[Kube]

Originally Posted by houseof34s

Where can Champion H10 two rib black bottom plugs be purchased?

Just about no where. IF you find NOS, expect to pay $50 each. Good used? About $20+ each.

[rufus39]

Kube is correct. These are very hard to find. I did manage to find a set at Hershey last year, but I had to look through several of the many vendors to come up with 8. Hershey would be my suggestion.
Good luck with your search..