A 1951 3100 originally came with a 216 engine but that doesn't mean that
that was what was in the 51 when that engine was taken out and placed in
your 49. I don't' know how to tell the difference between a 216 and a 235
except by the oil pressure and the amount of space that there is between the
radiator and the engine. If there is about 5" and 15# pressure then you
probably have a 216. If you only have 2" and your oil pressure is above 30#
then it is probably a 235 or a 261?
If you want to get down the road faster with less RPM, you might try putting
7.50R16 tires on the beast. They will fit. Some of those 7.50R16 tires are
I have a 1949 3100
>with what was told to me to be an engine from a 1951 3100. How do I tell
>what the engine size is? There has to be some kind of numbering system
>for the engine, but where? This engine has been tinkered with several
>including by me. But when I did my work I always assumed that it was a 235
>engine. Does this sound correct for a 51?
>Now for the second stupid question. I would love to upgrade the rear end
>a better gear ratio. Now being a somewhat lousy back yard mechanic, is
>an easy way to do this? I saw a kit in one of the parts books that is
>make it easier to do 65mph, does this work? And how easy is it to do? I
>don't want to invest $400.00 in the parts, only to find out that I can't do
>job myself. Would I be better off just replacing the rear end with one
>blazer? And if so what is a reasonable price to pay for a junk yard rear
>So many questions and so little knowledge on my part. Thanks for the help
>guys and gals.
>John "Rock" Rockefeller
>1949 3100 "Eeyore"
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959