Depends on what year the 350 was made. This engine has been manufactured since 1967. Over that 41 year period oil requirments have changed. All I can tell you without the year is that it is, listed in your owner's manual, and sometimes on the oil cap.
57%
What kind of question is this??
Check Hemming's Motor News
57%per gallon
It contains 57% gas
.57 cents
57
Behind the tail light on the driver's side. That's on a '56. The center section of the the tailfin chrome on the driver's side swings out and the gas cap is there on a '57.
57%
Engine displacement: 3.5 cu. in. (57 cc)
Pull the tank. It is easy enough.
In 1975, the average price per gallon of regular gas was $.57 cents