Re: Best modern day spark plugs for 1934 cars

Posted by Owen_Dyneto On 2012/6/24 8:15:38

Don't know how readily they're available in the UK but try for Autolite 303. The correct heat range, 14mm, plain black oxide shell as originals, and if you have the correct high tension wires with the eyelet, the nipple unthreads for the knurled threaded thumbscrew.

Incidently, the correct high tension wires for 33 and 34 Eights and Super Eights were covered in silver/gray lacquered cloth. The correct wire is available in bulk from Restoration Supply or Restoration Specialties but you'll have to improvise a bit on the eyelets, the OEM style is NLA. Eyelets at both ends, over the spark plug post (under the thumbscrew) and under the large flathead screw on the distributor cap.