[Sirrotica]

The pans are all the same if you're dealing with a factory pan, 1973 started the baffled pan, still the same except for the baffle.

Pontiac engineers only changed the crankcase volume by recalibrating the oil gauge (dipstick), the pans were virtually the same.

1967 stands all by itself by having a 7-quart requirement with filter, due again to having a differently calibrated dipstick. In 1968 they went back to 6-quarts with filter and changed the dipstick calibration to accompany the loss of 1 quart of motor oil in the engine from 1967.

I know this because I graduated from automotive Vo tech in 1970, and my first job was on the grease rack of the Local Pontiac dealership. The job required you to know what capacity each car was that you serviced so that you refilled the correct amount and also filled out the repair order with the correct amounts of oil.

Most people are unaware that 1967 the correct oil capacity is 7 quarts with filter, the pans remained unchanged as far as volume.