All passenger car 235 engine from 1956 and onwards had hydraulic lifters.
I got that, but is that what they meant when they said mine was a passenger? I wasn't sure if they meant "passenger year 1959" or "1959 passenger CAR motor" I'm going to assume it's a CAR motor until I see otherwise as it was definitely a powerglide motor.
whew, my brain is starting to hurt...
