Typo error - 1954 or newer 261?
The 261 was introduced in 1954.
All 235s from 1954 onwards were high pressure engines, with insert rod bearings.
The 1953 235 with Powerglide transmission (car only) was the only (and the first) 235 with insert rod bearings (and higher pressure engine lubrication).
Thank you.
What years do not need the water pump adapter?
Jeffrey
