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Differential gear ratios Question
Posted by: Lane66m ()
Date: October 11, 2017 07:37AM

I just counted the teeth on the pinion and carrier gears in the 2 transaxles I got with the Greenbrier. One was 9 & 36 which comes up as a 3.55 gear ratio. The other is 8 & 34 which comes up as a 4.25 gear ratio.

Was there ever a 4.25 gear ratio in the Vairs? Or do I have to go back and count the teeth again. I used yellow crayon so not to lose count.

The differential has the early 1/4 bolt yokes.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1966 Corsa Turbo Coupe, 180 hp 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2015 GMC Sierra SLT Crew Cab
1968 Camaro SS Coupe 350 CI 295+ HP PG
1947 Farmall A tractor 15 hp


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Re: Differential gear ratios Question
Posted by: idiyaught ()
Date: October 11, 2017 07:45AM

count both again
3.55 should be 9/32
3.89 should be 9/35
haven't heard of a 4.25

John Oostdyk
Thornhill, Ont
63 Rampy
65 Greenbrier
63 Coup
64 Convertible

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Re: Differential gear ratios Question
Posted by: Lane66m ()
Date: October 11, 2017 07:46AM

I am headed back out to recheck my count. Let you know shortly.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1966 Corsa Turbo Coupe, 180 hp 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2015 GMC Sierra SLT Crew Cab
1968 Camaro SS Coupe 350 CI 295+ HP PG
1947 Farmall A tractor 15 hp


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Re: Differential gear ratios Question
Posted by: solo2r ()
Date: October 11, 2017 07:52AM

The Pinion will either be 9 or 11 teeth

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Re: Differential gear ratios Question
Posted by: Bob Helt ()
Date: October 11, 2017 10:04AM

Are you counting transmission or differential gears?

4.27 was a transmission gear.

Bob Helt

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Re: Differential gear ratios Question
Posted by: Lane66m ()
Date: October 11, 2017 11:36AM

It was a miscounted in a dark shed with flashlight. Brought to door and Rick counted while I turned. 3.55 ratio. Sorry guys, thought I found an elusive 4.?? Differential.spinning smiley sticking its tongue out

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1966 Corsa Turbo Coupe, 180 hp 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2015 GMC Sierra SLT Crew Cab
1968 Camaro SS Coupe 350 CI 295+ HP PG
1947 Farmall A tractor 15 hp


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Re: Differential gear ratios Question
Posted by: MattNall ()
Date: October 11, 2017 11:48AM

4.11's made for Taylor Street Sweepers as I recall.....





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