Pertronix ignition.... What spark plugs???

[jimmy18thing]

I am running a pertronix set up on my 73 EB with a 302. Just wondering if I should change out the plugs for a better plug? Or should I change the Gap on the plugs? Just got thinking about it and thought I would ask.. Any Suggestions?

 

[broncnaz]

I'd stay with the standard plugs on any carbed engine just open up the gap a little more not sure how much more but the pertonix paper work should give a estimate.
To me using high dollar plugs on a old carbed engine is kind of a waste of money since the plugs usually need to be change every year anyways with a carb now if you have EFI then by all means the high dollar plugs are a little better.

 

[Baja71]

I went with the stock gap for the later elect Duraspark ignition, which was .044, I believe.

 

[dewshan]

I used stock style plug with larger gap. Paper work or website has the new gap size I think.

 

[dewshan]

I think you can try .040 and up to .050 depending on your spark wires. If it is missing at high rpm the gap needs to be smaller.

 

[Wyldebill]

I run my plugs at .040 with my Pertronics, but I also ran it at .040 with points because of the altitude we live with here.

 

[cgbexec]

I am running Autolite 25s gapped at .44 with no issues.