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64 vs 63 4 speed which would you choose?
Posted by: toms73novass ()
Date: December 19, 2017 07:30PM

I am leaning towards the 64 4 speed trans to put in my spyder, I also have a 63.

I would think that GM improved the transmission for 64-65, am I wrong?

I believe the 63 would give me a lower 1st gear....

Those that are wiser than me, I'd like to hear your thoughts.

-Tom


63' Monza Spyder Convertable (in process) MY Build Thread
65' Monza MY Build Thread
73' NovaSS 454 Big block (Sold)
86' BMW 325es
98' VW Jetta TDI, for daughter
01' Audi Allroad Stage 3 twin turbo

NFCC
Grand Island, NY



Edited 1 time(s). Last edit at 12/19/2017 07:30PM by toms73novass.

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Re: 64 vs 63 4 speed which would you choose?
Posted by: caroseiii ()
Date: December 19, 2017 08:20PM

Its harder to find 64 parts to rebuild them though it’s getting tough to find 62-63 parts too. You need to have the correct input shaft which can be a significant expense. The 64 FC transmission has the lower 63 car ratios and the main shaft improvements. So you can have it all!

CRAWFORD

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Re: 64 vs 63 4 speed which would you choose?
Posted by: steve c goodman ()
Date: December 19, 2017 08:39PM

64-5 have better spacing between the gears. Also improved shifting and reverse selector is better design.

Craig Nicol did an in depth study of the numerous 4 speeds offered. It was published in CORSA COMMUNIQUE several years ago.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC/V8 Registry

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Re: 64 vs 63 4 speed which would you choose?
Posted by: toms73novass ()
Date: December 20, 2017 03:00AM

thanks for the info. thumbs up

-Tom


63' Monza Spyder Convertable (in process) MY Build Thread
65' Monza MY Build Thread
73' NovaSS 454 Big block (Sold)
86' BMW 325es
98' VW Jetta TDI, for daughter
01' Audi Allroad Stage 3 twin turbo

NFCC
Grand Island, NY

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Re: 64 vs 63 4 speed which would you choose?
Posted by: ral1963 ()
Date: December 20, 2017 08:58AM

Also, what rear end are you planning on running...if you have availability to all the parts needed or cost isn't as important.

If a 3.55:1...go with the 64..

If a 3.27:1...go with the 63..

Just my .02

Rick Loving
Corvair historian & chronicler of useless facts
CORSA
Performance Corvair Group
Chicagoland Corvair Enthusiasts

RAL1963@COMCAST.NET
Just south of Chicago IL

Current Ride
63 Sprint Vert 140/4sp

Past Rides
60 700 Sedan 80hp PG
63 Monza Vert 102hp 4 spd
63 Monza Coupe 140hp 4 spd
63 700 Sedan 80hp 3 spd
64 Monza Vert 110hp 4 spd
64 Monza Coupe 95hp 3 spd
64 Monza Sedan 110hp PG
65 500 Coupe 95hp 4 spd
65 Monza Coupe 110hp PG
65 Corsa Coupe 140hp 4 spd
66 Turbo Coupe 180/4sp
68 Monza Vert 140hp 3 spd

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Re: 64 vs 63 4 speed which would you choose?
Posted by: chris ()
Date: December 20, 2017 10:53AM

+1 to what Steve and Rick stated. Craig's article about the transmissions is a good read and certainly worth thinking about depending on your intended usage. I know it definitely had me thinking!

'65 Monza 4 door
4 speed
110hp
Gardner, KS

Heart of America Corvair Owners Association

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Re: 64 vs 63 4 speed which would you choose?
Posted by: joelsplace ()
Date: February 18, 2020 04:51PM

I'm trying to find Craig's article. Not seeing anything with a search on Corsa's site.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

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Re: 64 vs 63 4 speed which would you choose?
Posted by: steve c goodman ()
Date: February 18, 2020 05:01PM

PM Craig and ask him which COMMUNIQUE issue the article appeared.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC/V8 Registry

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Re: 64 vs 63 4 speed which would you choose?
Posted by: chris ()
Date: February 18, 2020 07:21PM

The article of Craig's that I mentioned is in volume 3 of the tech guides. It's the one that goes over using a '61-63 transmission with a 3.08 axle ratio. Not sure if that's the article being referred here though.

'65 Monza 4 door
4 speed
110hp
Gardner, KS

Heart of America Corvair Owners Association

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Re: 64 vs 63 4 speed which would you choose?
Posted by: caroseiii ()
Date: February 18, 2020 07:57PM

My opinion is that if you have a 145 cid engine, use the 63 transmission. If you have a 164 cid Spyder, use the 64 transmission. You have to have the FC version of the 64-5 transmission if you want good torque multiplication with the smaller engine. Even though its a Spyder, 1st gear feels like 80hp. In all cases, install the transmission with the least wear! You can tell in most cases by feel and noisiness when rotating it through the shift pattern.

Crawford

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Re: 64 vs 63 4 speed which would you choose?
Posted by: joelsplace ()
Date: February 18, 2020 08:10PM

What I'm really looking for is a chart of all the ratios and part numbers for the gears.
Does anyone remember what transmission the upgraded 3rd gear with the thrust washer was for? My memory is getting to be completely unreliable.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

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Re: 64 vs 63 4 speed which would you choose?
Posted by: caroseiii ()
Date: February 18, 2020 08:29PM

This is Craig Nicol's chart from an earlier posting. It does not have the ratios. There is a thread on that topic.

Crawford

Attachments:
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Re: 64 vs 63 4 speed which would you choose?
Posted by: caroseiii ()
Date: February 18, 2020 08:35PM

That third gear part number 3821380 is for the 62-63 transmissions (despite the chart). It is backward compatible with 61 transmissions if you discard the thrust washer. It does not fit the 1964-5 mainshaft, even without the thrust washer. The 64-65 gear is thinner due to the shoulder on the mainshaft.

Crawford

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Re: 64 vs 63 4 speed which would you choose?
Posted by: joelsplace ()
Date: February 18, 2020 08:41PM

That's exactly what I needed. Thanks Crawford! Thanks Craig for all that work!

Does that mean that the "modified" 3rd gear is actually a '61 gear with a thrust washer that replaces the '62-'63 gear?

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...




Edited 1 time(s). Last edit at 02/18/2020 08:43PM by joelsplace.

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Re: 64 vs 63 4 speed which would you choose?
Posted by: vairmech ()
Date: February 19, 2020 06:42PM

With all the above said the 64-5 trans is the strongest of that style of trans. If you are planning on any boost at all that is the one to use.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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Re: 64 vs 63 4 speed which would you choose?
Posted by: junkman ()
Date: February 19, 2020 09:32PM

Thanks for the chart... Now, I can start to sort through the crate of gears that I have packed away 20 years ago. I sold all the 3 speed gears and kept the 4 speed.

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Woodstock CT... Located on the Connecticut / Massachusetts border, approximately 6 miles from the center of Southbridge MA. About 45 minutes from Hartford CT. 1 1/2 hours West of Boston MA. Woodstock CT to Los Angeles CA 2,937.1 miles. 1 Mile as the crow flies to Big Bird's nest.

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