SpringHeeledJack_53 Posted September 19, 2017 Report Share Posted September 19, 2017 Good morning all. I just put in the electronic distributor from Langdon. It came with Champion plugs but i normally prefer Autolite. Ive searched quite a bit on here for a pn or interchange but have not found one. What is a good plug and gap to run with this distributor? Its a 218 in 53 plymouth btw. As of right now i have Autolite 303 set at .35. Any suggestions would be much appreciated. Thanks! Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted September 19, 2017 Report Share Posted September 19, 2017 gap will depend on the secondary voltage of your coil......no just because of a electronic trigger... Quote Link to comment Share on other sites More sharing options...
wayfarer Posted September 19, 2017 Report Share Posted September 19, 2017 Agree, plugs don't care where the fire comes from, only how much.......here is a plug cross-reference site..... http://www.sparkplug-crossreference.com/ Quote Link to comment Share on other sites More sharing options...
Andydodge Posted September 20, 2017 Report Share Posted September 20, 2017 (edited) I fitted a Langdon HEI to my 1941 Plymouth and was very impressed with the improvement in starting and general driveability......unfortunately this was about 7-8 yrs ago and I have since sold the car...from memory I used either Bosch or Champion plugs but can't be sure which nor the plug number, however I reset the plug gap to 45thou however I had been told that I could up the gap to maybe 50thou if need be but kept it at 45, it ran well, the HEI was the best thing I did to the car........ these are the only decent pics I have that sort of show the HEI..............andyd. Edited September 20, 2017 by Andydodge info Quote Link to comment Share on other sites More sharing options...
SpringHeeledJack_53 Posted September 20, 2017 Author Report Share Posted September 20, 2017 Thanks all the info. I upped the gap to 45 yesterday and it seemed to run alot better. Better than it was anyways. Quote Link to comment Share on other sites More sharing options...
belvedere Posted September 22, 2017 Report Share Posted September 22, 2017 Autolite 847 should be equivalent to the plugs that Langdon's recommends. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.