[FC] Trans Question

[Dale Dewald]

Hello Ken,

I am looking at my Oct 1, 1964 P & A Catalog:

4.417 GEAR, Transmission 1st and Reverse

60-63  CORVAIR, F.C., CHEVY w/3-SPD,
64       F.C. w/3-SPD.................................    (29 teeth-16 
spline)............. 3725646
61-63  CORVAIR, F.C. w/4-SPD.................    1st (3-7/8 O.D.) (31 
teeth).... 3775090
64-65  CHEVY, CHEVELLE w/4-SPD.........     reverse (35 
teeth)............... 3831748
64-65  CHEVY, CHEVELLE 
w/4-SPD.........    1st..................................... 3849388
64-65  CORVAIR, CHEVY, CHEVELLE
                  w/3-SPD.................................    1st and 
reverse ................... 3848091
64-65  CORVAIR 
w/4-SPD......................... 
1st..................................... 3852243
64-65  F.C. 
w/4-SPD................................. 
1st..................................... 3852244

Unfortunately, the tooth count for parts 3852243 and 3852244 are not 
stated.  However, the tooth count of part 3775090 1st gear, which has the 
same 3.65:1 ratio as the 64-65 FC transmission, is clearly stated as 31 
teeth.  Are you sure that the transmission you have is a 4-speed?  If it 
is, are you sure it is not a 64-65 car transmission from a 500 model, which 
did not come with back-up lights.

1st Interesting Side Note: It appears that the early Corvair 3-speed shared 
a lot of parts with the 3-speed from the Chevy II and Chevelle cars.

2nd Interesting Side Note:  There is no listing of a 1st gear for a 65 FC 
with a 3-speed transmission.  I know of no 3-speed equipped Greenbriers in 
the 1965 Registry.  Were all of the manual transmission 1965 Greenbriers 
fitted with the 4-speed either as standard equipment or as a "mandatory" 
option?

Dale Dewald
Hancock, MI

At 17:46 9/13/2010 -0400, Ken Hand wrote:
>OK, my turn to ask the question.
>I think I have an FC trans but I know the counter gear and main shaft 
>tooth count will be different than stock. Since this is an NOS trans I 
>don't want to disassemble any more than the side cover. I have counted the 
>main shaft gear and for first gear I count 29 teeth. I checked one of my 
>other stock main shaft gears and I have a 31 tooth count. This leads me to 
>belive this is an FC trans plus the back up switch hole is plugged.
>
>Anyone remember what the tooth counts are? This appears to be a 64-5 trans.
>
>Thanks