identify 1933/34 rearend ratios?

[34roadsterpickup]

I have a 1933/34 rear end.I am trying to figure out what the final ratio is.
The numbers that i found on the bottom of the rear end is a (4 3) The three is backwards. Does any body have any ideas?

 

[deuce lover]

Ford only had 4.11(9-37) & 3.54 (11-39) in 34.Look closer as numbers might be worn.

 

[lee34]

The numbers are stamped on the rib going from the main housing to the pinion part.Sometimes they are filled with rust and dirt.You can take a knife and scrape the area and rub with chalk to make the stampings stand out.

 

[34roadsterpickup]

Could the rear end be a different year? It measures 50 1/2'' from the inside of both backing plates.The numbers i found were on the rib.

 

[deuce lover]

Need to see a picture.Is it out of the car?Click on the paper clip icon when you post a thread to add pics.How are the radius rods attached? On the housing or on the backing plate flange? 32 -36 are on the housing.Bracket on 32's are perpendicular to housing,33-34's are angled - both have 2 holes on each bracket on the underside to attach the radius rods.35-36 different.It could also be that the R&P was changed to 3.78 (9-34) which is a lot of work.You could count the revolutions when you turn the drum and see how many times the driveshaft turns per revolution.

 

[34roadsterpickup]

Need to see a picture.Is it out of the car?Click on the paper clip icon when you post a thread to add pics.How are the radius rods attached? On the housing or on the backing plate flange? 32 -36 are on the housing.Bracket on 32's are perpendicular to housing,33-34's are angled - both have 2 holes on each bracket on the underside to attach the radius rods.35-36 different.It could also be that the R&P was changed to 3.78 (9-34) which is a lot of work.You could count the revolutions when you turn the drum and see how many times the driveshaft turns per revolution.

The rearend is out of a truck.BAsed on your information it is either a 33 or 34.I just tried countinh the revolutions. I think it either a 4-11 or 4-33.Maybe the 3-4 that is marked in the rib indicates 4-33's.

 

[deuce lover]

No such thing as 4.33.Most 33-34's were 4.11.3.54's were an option or dealer installed.Those were the only gears Ford had in 33-34. Ford had 4.44 but that came out later and used with the V8 60's.

 

[34roadsterpickup]

I have a service handbook that shows a 4.33 optional gear . The 4.11 were standard.
The book may be wrong or they are rare.

 

[deuce lover]

Maybe that was for big truck which would be different than pass car.

 

[Richard]

Turn the drive line, count the turns required for one axle turn.

 

[barnfind08]

I just took apart a 33-34 rear end and the r/p is 9-39 stamped on both the ring and the pinion. It is a small bearing rearend so I know it is 33-34. 9-39 equals 4:33.

 

[34roadsterpickup]

Thank you for responding.I just started to take the rear end apart tonight.I will look to see if the 9-39 is stamped on the r/p.I just bought a set of 3.54 gears.My next project is to attemp to switch the gears.Any suggestions?