Mike,
The 216-235-261s were all the same basic size externally, however the
later (54-up) engines may appear slightly bigger because of the squared
off valve cover.
It could be the show truck had a late model 250 which is not as "bulky"
looking as the 235.
It could also be that your truck has had a GMC engine put in it. This is
not that uncommon for a work truck, especially if it was owned by a
garage or junkyard. GMC engines are visibly larger than chevy engines
for similar cubic inches and they also made gas engines up to 503s, but
I don't think anything bigger than a 270 would fit without MAJOR
modifications. To see an ad with the various engines go to
http://www.strato.net/~jrdorsey/gmc/
I think Jack mentioned casting numbers in another post, they are by far
the best way to positively ID an engine.
--
John Dorsey
Wauchula, FL
'49 Chevy Panel http://www.strato.net/~jrdorsey/truck.htm
'52 GMC Firetruck http://www.strato.net/~jrdorsey/fire/fire.htm
'51 Chevy suburban http://www.strato.net/~jrdorsey/burb/
mike wrote:
>
> I have seen a few threads about how to find out what displacement your
> engine is, but are there any characteristic features that distinguish the
> 216 from say 235 or 261? I was at a show last weekend, and saw a truck,
> hood open, and the motor in it just seemed much smaller (physically) than
> mine. I have tried to clean up the casting numbers, but as of yet have not
> yet found the numbers I think I am reading on any of the web pages regarding
> casting numbers. at the moment I do not have the numbers on me, but I can
> find them again later.
>
> the truck is a 1948 1-Ton, but probably doesn't have the original motor if
> it is not a 216. was there an optional motor size in '48? It was a
> tow/wrecker at one time for AAA if that would make a difference. anyhow, as
> always, your comments and helps are greatly appreciated.
>
> if this is something I could know by just RTFM (reading the freaking manual)
> let me know that also. so far I have not found this info on my own.
>
> the truck is basically in storage (garaged), but I am trying to learn enough
> for when I do get chances work on it (irregularly at this point) I can
> actually get something done. Thanks again for any help.
>
> 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
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