Close Ratio

[mototron]

Hello All
Can some one tell if Sunbeam ever made a close Ratio Gear box for a Alpine ?
I Could of used one At NHMS Last Weekend
Do the non syncro ones have a closer 2nd to 3rd ratio than the Syncro ones ?
Thanks
Rocco

 

[RootesRacer]

Hello All
Can some one tell if Sunbeam ever made a close Ratio Gear box for a Alpine ?
I Could of used one At NHMS Last Weekend
Do the non syncro ones have a closer 2nd to 3rd ratio than the Syncro ones ?
Thanks
Rocco

True series IIIs are the closest ratio but are non-sync.
The SV all-sync is close to that of the series III, but not quite as close ratio.

 

[Series3Scott]

Gear Ratios

Put this together when researching the Sebring cars:

Transmission Gear Ratios - Sunbeam Alpine

Stock Series II Competition* Series 3 All-synchro

1st 3.346:1 2.97:1 2.967:1 3.12:1
2nd 2.141:1 1.90:1 1.898:1 1.99:1
3rd 1.392:1 1.24:1 1.234:1 1.295:1
4th 1.01:1 1.01:1 1.00:1 1.00:1

*obtained from Sports Car Graphic articles by Bud Rose

 

[mototron]

How do I ID the Series III Trans ?

Thanks

 

[beamS3]

As a starting point the case for the transmission should have a date within the production run of the series 3.

Bob
beamS3