Tire pressure question

my68barracuda said

car is a 68 Barracuda
tires front 215/60/16 on 7 inch wide wheels
tires rear 225/60/16 on 8 inch wide wheels
the car is somewhat light weight, fiberglass hood and front bumper, aluminum front bumper brackets, light weight last year built slant. Carpet and interior trim is present, but no back seat, no under carpet sound deadening material.

The side wall of the tires says that max load capacity is at 51 psi.

Does a cold tire pressure on 38 psi seem about right?
The car rides and drives fine.
Thought I would ask to see what other folks run for tire pressure with non stock sized tires.

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An infrared temp gun is inexpensive and quick. Go for a drive of say 5 miles. Pull over and take the tread temps on the inside, center and outside. You are looking for even temps across the tire. Positive camber on the front wheels will have the outer warmer and the inner cooler. The center should be about the average of those two readings. Negative camber like used on road racing or slalom carswill be opposite with the inside warmer and the outside cooler. For stock street you should probably have slight positive camber with minor temp variance.
Too high pressure will heat the center and too low will heat both edges.