<VV> Fisher 4 speed option code

[Bill Hubbell]

The most likely reason for Fisher to have an option code for the 4-speed transmission is that they had to do something to accommodate the different gear shift lever. Why do I think that?  Because everything else is either the same or was installed by Chevrolet.  

So, looking at the '64 Assembly manual, I found these two pages telling Chevy workers how to adjust the gear shift lever- one in the main section 7 (transmission) for the standard 3-speed, and the other in the Options section M20 for the 4-speed.  Now, these are just drawings, so no proof here, but the 4-speed page labels a "support" under the floor that is not referenced in the 3-speed section. There is a similar looking unlabeled structure in the 3-speed drawing, however. 

Here is my thought.  Both shifters (and shift tubes) were installed by Chevy, but the 3 and 4 speeds use different parts.  I'm thinking that because the 4 speed shifter has more movements, and because people who would but the 4-speed tend to be a little more aggressive shifters, that Fisher installed a brace or reinforced the floor around the shifter. 

Now I need help to prove this. I need somebody with access to a factory 3-speed to look at the underside of the floor around the shifter area and take photos, etc.  I need the same done for a factory 4-speed. Note that this ONLY APPLIES TO EARLY MODELS!!

Thanks 

Bill Hubbell 
President, Stock Corvair Group. 

On May 15, 2014, at 4:26 PM, Bill Hubbell via VirtualVairs <virtualvairs at corvair.org> wrote:

I'm starting to think that the reason for this code is some arcane reinforcement plate somewhere in the body and we will probably never figure it out unless we dissect a 3 speed and a 4 speed side by side and look at everything. 

Bill
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