Plugs

[olredalert]

-----What would an R43S AC sparkplug be correct for??? Does the "S" denote short??? Would this plug work in a correct 69 Z engine??? Thanks.........Bill S

[Salvatore]

Correct plug for a 69 Z. To cold IMO. S=extended tip.

[Chevy454]

http://www.yenko.net/attachments/322679-plugs.jpg

This link has some more info as well: click (http://www.yenko.net/ubbthreads/showflat.php?Cat=0&Board=UBB10&Number=322242&Searc hpage=1&Main=321345&Words=%2Bplug+%2Bngk+Chevy454& topic=&Search=true#Post322242)

[Mr70]

Bill
Various engine equipped 1967-68-69 Chrysler Imperials,..Dodge Dart-Coronet-Charger & Dodge Trucks,..Plymouth Barracuda,...Oldsmobiles Cutlass F-85,all came w/AC R43S=Extended tip spark plugs originally from the factory.
Even International Harvester Trucks throughout 1973-1976.
Their detailed engine lists are too extensive to post here.

[olredalert]

------Thanks to all!!! Apparently usable but not optimum???........Bill S