Most of your questions are addressed in the Studebaker parts catalog.
According to the Studebaker shop manual, the '64 had a different
engine numbering sequence, which applied to both sixes and V-8s. A
South Bend six for '63 started out: S-261201. In '64 it was a code,
example: SG422 S=3D6-170, G=3DJuly, 4=3D1964, 22=3D22nd day. These
numbers=
are stamped into a pad on the block, just above the alternator.
***********************
On Mar 23, 1:35=A0pm, "Wizard of Oz" <jpbl...@[EMAIL PROTECTED]
> wrote:
> Thanks for the info. I have read about most of those things but
recalling
> them all at the point of need is the hardest to do.
>
> Now according to my shop manual I have a 63 but some other sources say
it'=
s
> a 64 do you or any one else have first hand experience with 63/64 OHV
sixe=
s?
> When was the actual change in piston types, the side valve cover PCV
setup=
> from 63 to 64 style, the crank counter weight change, etc..? Were all
done=
> at the same time with the change in engine numbering or did the changes
> happen gradually like the Avanti changes?
>
> Wiz.


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