Large thumper cam and things have been changed were going to manual choke that's solved and the why. Getting rid of the vacuum advance on the distributor got a plate to install. It's driving great it really does not need a choke but since it's there manual if I need it just in case cable will be there. I changed the power valve 3.5 rear jets to 84. A/F sensor reads right around 11 to 11.5 idle but will adjust the idle metering screws out a smidge now. Driving A/F sensor is showing 11.5 to 13.5 it's a good average of 12.5. Power valve was 6.5 not bad but the 3.5 is a huge success. Matches the vacuum now of cam. Timing I'm at 18 degrees and total timing at 35. It's very snappy now and driving great best I have tuned it since I got her up and running. We're I to purchase carburetor again I would have gone non choke 750/850. Distributor would have had no vacuum advance from the start. Lessons learned and I can argue why you don't need those things on a hopped up strip street car driven on cruise in and for fun.
