Not sure what year but I understand there is a really low 1st gear trans from an FC ??? I would like to buy one

1964 Bill Thomas Monza Replica Racer
1964 Spyder Street Car
1998 Honda Prelude Dirt track car
1967 Crown V8 under construction
Mike Levine
Cumming Georgia
North of Atlanta

As I understand the "stump puller" low 1st gear FC transmission was a very short lived item. It was not a full year unit but more like a half a year thing.

Timothy Shortle Wrote:
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> As I understand the "stump puller" low 1st gear FC transmission was a very short lived item. It was not a full year unit but more like a half a year thing.

Craig responds: That's my understanding as well,
Timothy.
The powertrain package consisted of the 4.26 low gear transmission, a 3.27 axle, and the 80hp engine.

The uber-low 4.26:1 first gear provided good off-the-line acceleration despite the 3.27 axle. I speculate that high-gear, highway performance was unacceptable when loaded because the 80hp engine didnt have enough power to maintain speed with the 3.27 axle. When the axle was changed id-year to 3.89, highway performance recovered, the low first gear was no longer needed, and it was discontinued.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
65 Canadian Monza 4dr 110/PG 40k
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

And, is there a way to ID one of these transmissions?

On the Wet side of Washington State

one too many cars,(maybe)

multiple Corvairs.
1962 Buick Skylark
1967 Datsun 2000 roadster

To answer my own question, info taken from Corvanatics;

3782978(case number) 1st-4.26 2nd-2.35 3rd-1.48 4th-1.00 rev-4.27

3785452(part number) - was the "1st design" '61 4sp transmission. It's identified in the earliest P&A catalogs and the engineering documents indicate it to have a 4.26 1st gear; changes to the engineering document correspond with those described in Technical Service Bulletin #690. [See notes below the 4 Speed Transmission table about earlier prototype 4.66 transmissions.]

On the Wet side of Washington State

one too many cars,(maybe)

multiple Corvairs.
1962 Buick Skylark
1967 Datsun 2000 roadster

Looks like the 64 65 FC trans is what I need , 3.65 first with the larger shaft

1964 Bill Thomas Monza Replica Racer
1964 Spyder Street Car
1998 Honda Prelude Dirt track car
1967 Crown V8 under construction
Mike Levine
Cumming Georgia
North of Atlanta

v8vair Wrote:
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> Looks like the 64 65 FC trans is what I need , 3.65 first with the larger shaft


Well how about this One? Price is certainly right especially for a post unit but not sure if you are close enough to make it worth the trip. The Islands are a beautiful place to visit this time of year

Is this yours Kevin?

[bellingham.craigslist.org]

San Juan Islands, WA

1966 Corsa Coupe 180/4 Marina Blue/Blue

1965 Corsa Coupe 140/4 Glacier Gray/Black



Edited 1 time(s). Last edit at 08/05/2022 02:04PM by Gatorfly.

If you can't find a '64-'5 FC 4sp I believe that you can make a hybrid version with much more common parts. You would need a first design '64 car 4sp and 1st, 2nd gears plus the counter gear from an early 4sp. Not the super low 1st gear trans but the common one used in everything. The counter gear of the early trans is the same as the first design '64 FC trans. A first design counter gear has 1 oil hole where as the 2nd design has 2. The early mainshaft gears will fit right on the '64-'5 mainshaft. The 1st and 2nd syncro assy is the same for all of the '61 -'5 4sp's. For some reason the '4-'5 mainshaft is about .030" longer between the 1st and 2nd syncro assy and the rear bearing. To make up for this the '4-'5 trans has a thicker washer between 1st gear and the rear bearing. I have not put a trans together to try this but I have assembled a mainshaft and everything fits. By doing this you would have the wider ratios of the early trans but you would have the better mainshaft, larger input shaft and the larger reverse idler gear. You would want to use the correct syncro rings to match the year of the gears as needed.

RJ tools
Salem,Oregon

Gatorfly Wrote:
---------------> >
>
>
> Well how about this One? Price is certainly right especially for a post unit but not sure if you are close enough to make it worth the trip. The Islands are a beautiful place to visit this time of year
>
> Is this yours Kevin?
>
No, that is one of the "other" Corvair guys on San Juan Island- I've known him since the 1980's.

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car
Test Start#2 [www.youtube.com]

That is a great deal up in Washington. I wish I was closer. I don't think I have ever seen the HL diff. code before. 3.89 posi MT. If I was closer...