mlander Posted September 18, 2006 Share Posted September 18, 2006 AC OLDSMOBILE SPARKPLUG SPECIFICATION CHART1945 ISSUE Passenger Cars- 1924-1942Oldsmobile ?Model 30??????????.?..76SAll others thru 1927...............................771928 thru 1936???????????????.?861937-38-39-40????????????????.451941-42?????????????????..?....44M.L. Anderson Link to comment Share on other sites More sharing options...
rocketraider Posted September 19, 2006 Share Posted September 19, 2006 An excellent technical post! Thank you mlander! Now to figure out how to keep it visible and not get lost in the shuffle...Folks- we need more of this type stuff. If you have info like this for ANY YEARS Oldsmobile, please feel free to post it. Link to comment Share on other sites More sharing options...
mlander Posted November 22, 2006 Author Share Posted November 22, 2006 This is to add to the chart above but is only about 18mm by 1/2" reach sparkplugs and to sparkplugs made after 1937 when AC changed their numbering system to the one shown. Ml.L. AndersonCHAMPION------ CHAMPION-------AUTOLITE------AUTOLITE-------DELCO AC--------DELCO AC-------NEW-------------EXTENDED-------NEW-----------EXTENDED-------NEW------------EXTENDED-------18mm BY---------CORE-------------------------- CORE--------------------------- CORE------------½? REACH--------NOSE---------------------------NOSE----------------------------NOSE----------------------------------------------373------------------------------C 81---------------------------- D6------------------------------- 373-------------------------------------------------------------- D9------------------------------- 373------------------------------C82----------------------------- D9--------------------------------373------------------------------C83-----------------------------NONE-----------------------------386------------------------------C85-----------------------------NONE---------------------------------------------3116-----------------------------C85S------------ NONE------------D15Y----------------------------3116---------------------------------------------- D16-------------------------------386------------------------------C86----------------------------- NONE------------D18Y----------------------------3116---------------------------------------------- D21-------------------------------386------------------------------C87----------------------------- D23-------------------------------386------------------------------C88----------------------------- Link to comment Share on other sites More sharing options...
Guest oldsmobile1915 Posted July 16, 2007 Share Posted July 16, 2007 I know for the 238 cu in inline 6 cyl (I believe the same engine was used 1937-1949) used AC R45 spark plugs. That's what's in my 1948 Dynamic 66. ( www.geocities.com/oldsmobile1948 )Best,Joe Ferrero Link to comment Share on other sites More sharing options...
Guest Old Codger Posted November 22, 2013 Share Posted November 22, 2013 Here is a link to a Cross Reference chart. Has some good stuff for finding a different mfg'r if you can't find the exact mfg'r you want.http://www.angelfire.com/extreme4/skidoolympique/SPARK_PLUG_CROSS_REFERENCE.htmOld Codger Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now