Runs then dies
What the pressure is equal to is sortof irrelevant.
And still, we don't know what engine you have so I can't even back-calculate the pressure for you.
But if it's a 340 with a bit of a cam, then the only way the Wallace calculator gets to 115psi, is if someone bumped the Compression ratio up some.
If I use that same compression ratio and drop the 3600 feet out, then the Wallace spits out a sealevel pressure of 134psi
I used an Ica of 66* for anyone who wants to play the game.
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I have a 4-speed as well, but with 180psi at 930 ft.
As you know; with a manual trans, the engine is married to the rear wheels. So, with typical street gears (should be 3.55s if it's original), and a Regular A833, your engine spends a lotta time at low rpm.
A bit of a cam sortof implies a powerpeak of say 5200, and that puts the torque peak around 3700, and a shift-rpm of say 5500.
Your powerband thus is from 3700 to 5500.
So then, with 27" tires and 3.55s, she won't hit 3700 in First gear, until 31.5mph. In other words, around town, she will be in the soft zone pretty much all the time. Man I feel sorry for you.
In Second gear, 3700 does not arrive until 43.6mph. Thankfully, you can carry first to 5500 and drop into Second at 3970=46.8mph. But, as I can imagine, at 3970 with 115psi, this is not really Rapid Transit.
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back to your fuel problem;
have you proved that your tank is venting?
Pop the filler cap and go for another ride.
Today— With idle at 800 rpm- Reset timing to 20’ , it is 37’ with mechanical added,
37* at what rpm? Is that all in? As in higher revs will not advance any more?
I ask because 17* in the distributor is sortof an anomaly.
If a 340, the factory IdleTiming would have been spec'ed at 5* (IIRC), and the PowerTiming still had to be around 36*, so that would make the mechanical timing in the Distributor to be ~31*. It's a looooong way from 17 to 31.....