Plugged Avanti!

[mfg]

Studebaker recommended using Champion.....?..... spark plugs for an Avanti that was to be used in "sustained high speed operation"

1) H-14Y.....2) J-10Y....3) R-J12Y....or....4) J-61Y

(As of 4/10/63)

Edited January 1, 2022 by mfg
Added date

[avanti661]

4  J-61Y

[mfg]

3 minutes ago, avanti661 said:

4  J-61Y

Sorry no, not J-61Y

[studegary]

34 minutes ago, mfg said:

Studebaker recommended using Champion.....?..... spark plugs for an Avanti that was to be used in "sustained high speed operation"

1) H-14Y.....2) J-10Y....3) R-J12Y....or....4) J-61Y

(As of 4/10/63)

J-10Y (formally J-9Y)

[mfg]

13 hours ago, studegary said:

J-10Y (formally J-9Y)

You got it!