Factory installed spark plugs 1968 BB cast iron heads.

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**daveg** · #5 10-23-2025, 07:15 PM

Looking for info in the right place helps.

Looks to me I have the proper factory plugs for 68 BB with cast heads.

Search over.

Enjoy or ignore.
Choice is yours.

Pic 1 from 1958. Note no green rings
Pic 2 from 1962
Pic 3 from 1966
Pic 4 from 1967
Pic 5 from 1968
Pic 6 from 1969 and it also has good info
Pic 7 from 1969
Pic 8 from 1970
Pic 9 from 1976 and shows wide top green ring. 1974 does not.
Pic 10 Dec 1970 and shows introduction of HI PERF plugs

The Following User Says Thank You to daveg For This Useful Post:
olredalert (10-23-2025)

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