Electrical: Spark plugs for an L-head 6

[Guest]

Guys - I know this has been brought up a zillion times and I tried a search but couldn't find the answer, so, sorry for asking again.

I'm helping the widow of one of our late members get his '51 Champion running and would like to replace the Autolite H37's that look spent. Use the same? Seems to me the old Champion plugs are NLA..?

Many thanks!

[Bud]

The recommended plugs for the flathead 6 are Champion 871/RJ8C, Autolite 295 and AC R45. Bud

[Guest]

Thanks, Bud!

[nvonada]

Mine is running Champion L86C plugs but they are around 9 years old and may well be NLA.