144, six in 1960 .
144 or 170 in 1961
The Falcon got it's first V8 in 1962 , 221 or a 260 while also having the 144 and 170 .
260, 289 V8 then 144,170,200 six 1963.
260,289 V8 then 170,200 six 1964.
These are Falcon engines but the Rancheros was close but had the bigger engine most of the time.