Author Topic: 1969 396-375 AC Plug  (Read 2552 times)

69z28fan

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1969 396-375 AC Plug
« on: June 26, 2019, 11:37:42 PM »
Can someone tell me what the correct plugs are for a 1969 396-375. Will R43xls work in this motor?

WorkinProgress

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Re: 1969 396-375 AC Plug
« Reply #1 on: June 27, 2019, 12:12:13 AM »
R43 is the correct plug for iron heads. Not sure what R43XLS is, but the R43XL is used with aluminum heads. XL stands for extra long threads.

                                      - Warren

WorkinProgress

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Re: 1969 396-375 AC Plug
« Reply #2 on: June 27, 2019, 04:32:42 AM »
Made a mistake. R43 is a 302 spark plug. R43N is the correct plug for 396/375 with iron heads. R43XL is for aluminum heads.

                                              - Warren


69z28fan

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Re: 1969 396-375 AC Plug
« Reply #3 on: June 28, 2019, 03:03:58 AM »
Thank you.