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    1. #1
      Join Date
      Mar 2013
      Location
      San Jose,CA
      Posts
      247
      Country Flag: United States

      spark plug recommendation

      i have a SBC 406 with dart eagle 215 heads.. mostly want be a street car with some auto-x in the future

      right now it has autolite AR133 plugs as per recommended by darts website but from what i understand these are more of a race plug and colder plug so foul out easily?

      ive been messing with carb/timing to get right with this new setup and afraid these may be playing a part in all this

      any of you have these heads and what do you run?

      autolite,ac delco, ngk?

      thanks

    2. #2
      Join Date
      Jan 2012
      Posts
      175
      Country Flag: United States
      NGK is a better plug IMO. What's the compression, fuel, rpm range, etc? Also what type of plug does it take( solid gasket .750" reach 14mm etc)

    3. #3
      Join Date
      Sep 2006
      Location
      Southern Indiana
      Posts
      4,699
      Country Flag: United States
      NGK , Denso, AC Delco are my preference.
      In GM I still like AC plugs.
      Now I have found that Motorcraft will interchange with the AC plugs.
      And never cause an issue also.
      Only car I run Champions in are Chryslers products that come stock with them.
      I pass on Bosch Platinums anymore and NEVER run Autolite, the fit nothing, are stock for nothing and honestly see no reason to run thwm.
      Now, I have had some luck running Bosch Supers in certain engines, even GM. But I still stand by my preferences.

      Lee Abel
      AFTERMARKET PERFORMANCE

      1977 Chevy Monza 2+2:Project "Cheap Trick"
      1978 C10 Long bed , On air and trailer puller
      2006 Buell Blast ,Just a bike to ride and for mileage
      1966 Caprice 4dr Sports Roof fact.327/now 350/SOON 454???? Project "II Old,,,ZERO BUDGET OR LESS CAPRICE!"




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