<VV> Shift levers

[Kent Sullivan]

Padgett,

I believe that Chevy decided to get rid of the M20 pages in the back
starting in '66 because everything was the same except the transmission
itself, whereas in earlier years there were significant differences.
Coincides with the new "Saginaw" transmissions. If you look at page 169
you'll see that M20 is listed but with a "see regular production" note.

Great job on pointing out the change log for the shift lever. This is
CRITICAL to do since, as I pointed out in a post earlier this week, the
assembly manual only shows the final design for the model year. What someone
needs to do now is look at a '65 manual and see what its change log looks
like, to get the entire string of events.

The seats are not in the assembly manual because they are not part of final
assembly. Remember that the assembly manual only covers what Chevy final
assembly did, not what Fisher Body did (seats, glass, doors, carpet, etc.)
or what another Chevy plant did (engine block and internals, front
suspension, transmission internals, etc.).

--Kent
-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Padgett
Sent: Friday, December 23, 2005 6:53 AM
To: virtualvairs at corvair.org
Subject: Re: <VV> Shift levers


>2) 1966 GM assembly manual gear shift control schematic which 
>specifically covers the shifter assembly states there are 2 different 
>part numbers for the shift lever, one for 10100 - 10500, and one 
>specifically for 10700 and labeled Corsa only. This agrees with the 65 
>manual ...
>3). Part numbers for the 1965 shift lever are 3872870 for Monza/500 
>models and 3872871 for Corsa models
>
>These numbers are superceded by the following numbers for the 1966 
>model
>year: 3881738 for the Monza/500 model and 3872872 for the Corsa model.

My copy of the '66 assembly manual does not have any separate "M20" 
accessory section.
It does show  p/n 3881738 for 10100-500 (500 and Monza) and 3872872 10700
(Corsa)

There are two change notes:
(2) - was 3872872 lever changed 7/7/65
(5) - 3881738 lever was 10500-700 (Monza and Corsa)
         3872872 10700  lever was 3881738 - 10100 (500) changed 10-22-65

What this sounds like is that originally (April 21, 65) there was supposed
to be just one shift lever 3872872.  On July 7, 65 there were two levers,
3881738 for the 500 and 3872872 for the Monza and Corsa.  Then on October
22, 65 the -738 was used on the Monza and Corsa and the -872 became Corsa
only.

Note the use of p/n 3881728 (in note 5) and 3881738 in other places. I
suspect this might be a typo

I do not know how long it would take for the change notices to reach the
production lines but most likely the first one went into effect before
production began and the second somewhere before the midpoint.

This appears on page 7-B2 (Clark 1966-103) of the 1966 assembly manual. One
question comes to mind since the assembly manual does not seem to have
installation of the seats (did I just miss it ?) would be whether a
different shift lever was used for cars with the bench seat standard and
whether there was a change in standard seats for the Monza during the
production run.

Just to really confuse things, my '73 parts book shows the 3881738 for
66-69 three speeds and the 3872872 for 66-69 four speeds

It is going to take a drawing of the lever with dimensions (or someone to
measure a couple) to determine if there is a difference in throw but it
sounds like the same lever could be used for either the three speed or the
four speed.

Padgett

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