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Thanks, I found a copy of the FSM and it looks like it should be a 4114S for the automatic trans models.
Did find another source showing it as 4114SA...guessing they just added an A on the end to indicate auto trans. application.
Have a 66 Belvedere 273 2 barrel automatic, been having a bit of fuel leak around bowl gasket and decided to pull the carb run it through the ultrasonic and install a kit.
Turns out the carb on it, number 4957s is showing to be off early 70 318 pickup trucks. Now it really doesn't matter as it...
Actually if I was on a short runway on a 100 degree day I might do a full power runup and lean it a touch right on the ground.
Generally in temps of less than 90 degrees and at field elevations of sea level up to a couple of thousand feet I just leave it full rich on
climb out ( full power )...
A couple of points...most piston engine aircraft have mixture controls.... pig rich to turning the fuel totally off.
EGT gauges to lean with and in some cases CHT also. Turbocharged engines even more "tuning" aids
Other than takeoff and landing I and most pilots I know like closer to 3000 feet...
The local airport where I keep my Cessna has a 100LL pump near the hangers. I've added various amounts to my older cars over the years
with no real noticeable effects. None of these are highly tuned to the last .001 second bracket racers...just drivers. I pretty much fill the tanks at the end of...