1969 L89 Spark Plug - NCRS Discussion Boards

1969 L89 Spark Plug

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Joseph A.
    Very Frequent User
    • June 20, 2012
    • 136
    #1

    1969 L89 Spark Plug

    Does anyone know the correct spark plug for a 1969 Aluminum head 435?
    Tags: None
      • Top
    • Joe L.
      Beyond Control Poster
      • January 31, 1988
      • 43194
      #2
      Re: 1969 L89 Spark Plug

      Originally posted by Joseph Aronne (17712)
      Does anyone know the correct spark plug for a 1969 Aluminum head 435?
      Joseph-------


      According to GM the original plug was AC R43XL. You might want to use a hotter plug for better street operation, though.
      In Appreciation of John Hinckley
        • Top

        Comment

        • Jeff B.
          Very Frequent User
          • April 30, 1980
          • 165
          #3
          Re: 1969 L89 Spark Plug

          I used AC R45XLS in mine, and still had occasional fouling. Didn't get on it often enough.
          1967 Coupe 427-390 w/air
            • Top

            Comment

            Previous template Next
            Working...
            Searching...Please wait.
            An unexpected error was returned: 'Your submission could not be processed because you have logged in since the previous page was loaded.

            Please push the back button and reload the previous window.'
            An unexpected error was returned: 'Your submission could not be processed because the token has expired.

            Please push the back button and reload the previous window.'
            An internal error has occurred and the module cannot be displayed.
            There are no results that meet this criteria.
            Search Result for "|||"