Help me find the umph in my 360

a-bodyguy said
no
get your tire dia plug that into the calc to find out your gears
27 tall tire 50 mph@3000=4.56 gear
26 tire 50@3000=4.30 gear
trans could be slipping or the converter could be junk or your spedo is off
you need to work the problem
verify mph@50
verify tach isnt junk
verify trans isnt slipping
verify proper kickdown
verify gear ratio
verify tire size
checking cam is about 7th on the list
nice looking ride

I feel you on the torque converter slipping. Because at cruising speed below the power band of the cam the car has a very light surge to it. Very minimal. But afr is showing like 13.5 to 14.2 when cruising. So I know it's not a lean condition. I just wonder if the the converter is fighting the cam. And my rear tire is a 225 50 r17