Tuning Q

I like to run driver cars around the 180-200deg range to improve the burn. A hotter engine burns more efficiently and has better cylinder wall wear. If you run the car colder I would go with a stock range or slightly hotter plug to reduce fouling if you find the plugs getting fouled easily (also check that the carb is setup properly). With a carb I find fuel will atomize/evaporate better with a warmer engine.

I'll include an interesting picture, take it for what it's worth (free)

Wes

Run whatever T-Stat will keep the engine at 180-210*. Sometimes it takes a 160 to get it in that temp range (like my V8 Ranger) As for cold plugs, that's got more to do with the engine's resistance to detonation, colder plugs allow a higher resistance to detonation, same as for the octane rating.

i also would run a 180-200 degree thermostat. if you have detonation problems then use a colder plug.