Spark plugs

[Glenn Treybig]

I have a 49 Allis Chalmers "B" which is stock. I'm running Autolite 295 plugs on a mag. and would like to run a hotter plug. Can you till me which plug will give me the best power for pulling.

 

[Kip-Utah]

Unless you are fouling plugs why would you want a hotter plug? If anything a B/C tractor in good mechanical condition & state of tune, you might want a slightly colder plug like an autolite 303,especially if you were running a distributor. With your mag fired tractor Put a fresh set of 295s gapped at .025-.030 and you can't do better. Kip

 

[Anonymous-0]

ar2246 is hotter ar2247 is the hotest.
295 IS MIDDLE ROW

 

[fastpuller]

i put a set of split-fires in mine and gained 12.3 hp.

 

[Glenn Treybig]

which split-fires plugs are you using