Thanks to Mike, Joe, Bill, and Don for information.
It would appear that this is most likely a '57 283 (which is what I was told
the motor was when I got it). However, several questions have been asked
back. I will answer them as best I can.
1. What is the casting # on the left hand rear of the block?
- It is difficult to see all the digits and I am not sure how
many digits there should be, but it looks like 973548. The first digit -
'9' is questionable because I was looking through the starter hole in the
floorboard to see it. The '73548' portion I am pretty sure of because I
could see this from beneath the left front wheel-well.
2. Where are the motor mounts?
- The motor mounts are on the front of the block. A line drawn
through the center of each motor mount would be just above the crankshaft
centerline I believe.
3. Where is the oil filler?
- The oil filler is in the intake manifold directly behind the water
4. Are there accessory holes in the heads?
- No. None.
5. Does it have side motor mount bosses?
- I don't believe so. There are no holes drilled anywhere on the
sides of the motor for mounting. The only "boss" looking area is around the
front freeze plugs, but they have no holes.
From: Boteler Family <email@example.com>
To: OLETRUCK list <oletrucks@Autox.team.net>; kirk pierce
Date: Sunday, March 25, 2001 9:11 PM
Subject: Re: [oletrucks] 283 in a '57?
>Kirk, your engine number breaks down as follows:
>F = Flint Plant (T = Tonawanda Plant)
>4 = Month (April)
>17 = Day
>S = 6000 series and up, "283"
>The "S" was also used in 1958 for the same models. However the '57 283 is
>the only engine block NOT have the side motor mount bosses, it's sides are
>smooth. Side motor mounts were not introduced until 1958. So if the sides
>of the lower block are smooth and it's marked "S" then it has to be a '57.
>All '58 and newer blocks have the side mount bosses whether they were used
>Hope this helps,
>'56 8400 Wrecker
>----- Original Message -----
>From: "kirk pierce" <firstname.lastname@example.org>
>To: "OleTrucks mailing List" <email@example.com>
>Sent: Sunday, March 25, 2001 8:22 PM
>Subject: [oletrucks] 283 in a '57?
>> 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
>> 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
>> 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
>> stepside 1/2 ton. It would make me feel like my truck is more
>> 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