t-4-2
Member
I am using an AR51 spark plug in my engine and they are fouling after about 25-30- miles. A lot of carbon build up and then the engine starts to run like crap. I was looking on line and found that the AR52 is the same heat range but it says they disapate the heat faster. I was just wondering if I should use the AR52 or go to the next heat range and lean out the carbs a little to see if it will run better. I realize with two Edelbrock 650 carbs it will not be easy to make it run top notch, but I need it to be a driver that will go farther than 30 miles on a set of plugs. Thanks for any thoughts on this.