My apologies on my post that indicated you said your engine had the "848" head.
I went back through and couldn't find the reference - duh!
May have just been the result of my brain being in mini-overdrive and thinking since it was noted to be a 1957 235, that it would have had an "848" head installed. I did do a check and found
this truck specific engine head info that indicates the "848" head was standard for "All (235)" truck engine heads from 1955-62.
Sorry if this caused any misunderstanding or misdirection!
Dan
PS - So what is the casting code info on your engines head???
