Carb CFM ratings began in the late 60s by Carter, and why you don't find such info. Most information that is published is from people doing flow testing and technical calculations of venturi diameter and various other parameters per application. And like dyno numbers, it can vary several CFM either side of the "rating" due to different characteristics of the "mule" and sampling equipment used. So, you might see numbers +-25 CFM.
Are parts still available to service this carb? Car runs and idles well. Needs a tune up. Plan on plugs and wires, petronix ignition, distributor recurve and timing. Probably in that order before I worry about the carb.
I rebuild AFB's for people all over the world. Install the finished carb. on a running driving car BEFORE returning. DON'T need any problems especially when dealing overseas. ALSO do distributor overhauls, re-curving, installing electronic ignition conversions all over the world. As a word of caution, USE GOOD WIRES. May I suggest Taylor Spiro Pro wires. I could make them up for you using one of the cars I own as a pattern. Tom T.
The Calif carbs have the same bore sizes as the 49 state, but the primary venturi is a smaller diameter, 1-1/16" vs 1-3/16". That may reduce the max cfm? Calif carbs also have different jetting, metering rods, and idle ports. If you want to build your 4059 carb, you (or Tom) could likely swap in the larger venturies and improve the jetting for better performance. Edit: The primary venturies can not be changed out.... I was thinking of the later aftermarket AFB's.
I intend on keeping everything as original as possible with a couple upgrades like the points conversion. Anything I change I want to be easily put back to original at a later time. Not looking to hotrod or max power. Just want a good running factory car. Josh
