There is a big temperature difference from the left bank at +400 degrees to the right bank at 297 degrees. The measurement was taken with the '56 Ford 312  warmed up and running.
 I pointed the infrared thermometer at the very end of the exhaust header, closest to the fire wall, on both banks and got the imbalanced readings of +400 degrees left and 297 to 300 degrees right bank.
Why is this happening or is it normal ????
Let me know what you think,
Thanks,
Tim Quinn
Florida