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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
73' NovaSS 454 Big block
86' BMW 325es
98' Dodge 2500 12v Cummins Diesel with 1200 lb torque!
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

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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
73' NovaSS 454 Big block
86' BMW 325es
98' Dodge 2500 12v Cummins Diesel with 1200 lb torque!
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 Rides
63 Sprint Vert 140/4sp

Past Rides
66 Turbo Coupe 180/4sp
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
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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