Paul,,,,,,,,isn't an AFB a little much for a slant six,,,,,,,,,,,,or isn't that what your running it on,,,,,,,,,,,,need a little more info for any accuracy, and even with all the info it is just a guess,, every engine even if built the same has its own sweet spot, as well as a carb can be properly tuned for performance, or economy, or anywhere in between,,,,,,,,,,,what are you shooting for [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. u/?bUrDWg.bSONJP.YXJjLjYy