Sonny
It’s all fun til the rabbit gets the gun.
Obviously I chose the easy two spark plugs! Those Hedman headers on a 440 doesn’t leave much room for a spark plug removal. I’m going to wait and get the new distributor on Tuesday and try that out before having to fight those other six spark plugs.165 is great on the compression. My build is almost the same as yours and thats the number I get. How about the rest of your cylinders?