?'s about tuning, pinging, and Compression

Hey. 40 degrees is to much the problem is your motor needs more initial timing to bring the vacume up to were the carb can be adjusted. with stock curve you set the total at 40 that allows the initial to be were the motor wants to be or close. Shortren up the total advance so you are in the 34 to 36 degree range. Some people will say that 40 degrees is ok but thats just covering a fat carb. If the timing and carb are adjusted corectly the 34 to 36 will be perfect no pinging and running good. Other people here have mentioned FBO Systems I cant begin to explain how much They have help me on the performance of my eng. Don there is sharp on tuning and can give you some good advise just have as much info as possible when you call . Cam specs gear ratio carb size. Your ride sounds fun good luck and get it tuned right.