Are you sure the last letter is an "S"?
It seems that the first three indicate that it was built at the Flint plant
and that it was built on 4/17 but the S doesn't seem to fit for the 55-59
years at least out of the book I've got. Since the last letter didn't match
the tables I have, I couldn't tell what year is was.
If you really want to start a fight, say that your 57 should have a 265 V8
instead of a 283. . .though there may have been some 283's get in at the end
of the model year. Cars picked up the 283 about a year before the trucks
did. My brother's 57 Cameo is a 265 V8 truck. It's possible and maybe
probably that the school bus being a "big truck" may have had the 283 though.
. .and I thought that the big stuff from those years could also have the 348
V8, but you should've had alot more troube installing it if it was the "big
How big of a school bus was this?
In a message dated 3/25/01 6:33:35 PM, firstname.lastname@example.org writes:
<< Hello List,
I have 2 questions for the history buffs among us. I have a '57 1/2 ton
stepside whose 6 cylinder was disassembled and allowed to rust up before I
purchased the truck. I removed a V8 from a 1957 Chevrolet
bus and put it in the truck. I did not have to do any work to the bus
motor, so I didn't have the heads off to measure things.
1. I believe that motor is a 265 or 283 but can not be sure. The number
on the block in front of the right hand cylinder head reads F4I7S. Does
anyone know what the displacement is from this number?
2 What year was the engine built?
I am hoping the engine is really a 1957 and that it was an option in the '57
stepside 1/2 ton. It would make me feel like my truck is more "authentic".
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959 >>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959