Old spark plug p/n charts

I've got a few sets of older spark plugs and I'd like to identify what engines they were used in. Anyone know of an online site that I could look them up on?


Champion Y-5
Champion H-10
AC 45

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Thanks

 

Champion Y-5 new # 842, Antique cars,

Buick—1941 with 10mm head

Cadilliac--- 8-cyl. 1939-48

Chevrolet—All models 1941-48

Lasalle---All models 1939-40

Packard--- All models 1937-49

Volvo—B4B, B14A With 10 mm heads



Champion H-10 new # 854- outdoor power equip. Gravely, kohler, onan





AC-45 crosses to Champion J8C new # 841-- outdoor power equip. kohler, Kawasaki, Tecumseh, toro

 

Thank you very much 55 savoy!

Much appreciated.

 

Missed the most obvious to me.

Champion H-10 = Ford flathead

 

Thanks - what years?

The AC 45's are also poncho plugs.

 

The AC 45's will work in V-8 Chevys (make that small block Chevys) up to around 70, then they went to a tapered seat plug instead of the crush ring type.

 

Thx again guys.

 

H 10 is the most used plug for '38-53 flatheads, but many charts don't show it--they show the next hottest plug in the series, a Kludge based on the assumption that flatheads are all worn out by now and need more anti-fouling help...