I just had a professional engine builder tell me something that I disagree with, so I was hoping to get some input from the motor gurus on here.
This is a 510 BBC, 8-71, carbureted, pump gas motor in a 25 eliminator. It runs well at sea level. I am taking it up to lake Tahoe, which is about 4500 ft I think. My plan was to lean the jets in the carbs a few sizes (4)and change the blower from 15 over to 23 over.
This guy is telling me that speeding up the blower will lean out the air/fuel mixture, and that I shouldn't re-jet.
I think that a mechanical injected motor would lean out by speeding up the blower, but I don't think it works that way on a carbureted motor.