Fine Tuning a 360 Magnum with a Brawler "Double Pumper"

jmanhoff said
About 13.6-13.8. My alternator is going out though so it fluctuates a lot, I’ve had this issue prior to doing the engine swap just have been bouncing between getting a HD alternator or stock replacement

What people don't understand is ignition strength affects the burn. I have seen half a volt (0.5v) drop in alternator output change the spark plug from looking good to flat out looking rich and read richer in AFR (innovate 02's) but in actual fact the AFR didn't change.

Before you even approach tuning the carb sort out the alternator and make sure you are getting enough power to your ignition box.

Aim to get about 14.4v output from your alternator at idle.