According to the
Technical Service Bulletin at the beginning of the 1954 Chevy Truck Data PDF, the engine serial number "F54Z" was for a 1954 Regular 235 installed in a 2 or 4 door passenger car.
The casting number on your head "#3835913" was used on 1954 235's and was not truck or car specific. That engine serial number and head casting number matches the 1954 235 taken from a Chevy sedan by my grandfather that currently resides in my
1951 3100.
Being from a car means it was definitely painted blue. Yes, to your question about a high pressure engine with insert bearings. To fully confirm, locate the engine block casting code number and casting date codes on the passenger side of the block and post them here so we can confirm.
