the dipstick is on the drivers side on (i cant remember the exact year) engines up to 1980 or 1983. its on the passengers side for all years after that, 305 and 350. engine size is also cast into the motor right where the transmission bolts up and on the side of the block above the oil pan rail. newer motors are cast with 5.0L, 5.0G (high output) or 5.7L.
