The Ford Barn

Andy · 10-20-2015, 03:45 PM

I have been looking at a green bible. The listing for a 32 axle shaft is about 5/8 shorter than the later axles. I wonder what the real flange to flange width is. The 32 uses a 24 tooth gear so that would maybe throw the width off. Does it change with the use of 40 brakes? I would also like to know the flange to flange width of a stock 40 rear. I had been under the impression that 33-34 rears were narrow like a 32 but the bible says no. I also found that the early 32 rear used A axle shafts.

V8COOPMAN · 10-20-2015, 03:57 PM

Andy........The old Street Rodder article in the link below may help ya figure-out the width you're looking for on the '40 rear. If it helps any at all, a '34 banjo housing is 5/16" narrower than a '35-'48 banjo housing. DD

http://www.flatheadv8.org/fordrear.htm

rotorwrench · 10-21-2015, 11:00 AM

I've never checked the big green book for the 32 stuff specifically. The A style rear axle for the Model B bangers is pretty much like the model A axles. The Model 18 V8 axle was the first departure from that but I always figured the model 18 V8 axle was the same between the 32 thru 34 cars. As long as they are all model 18. The 200 cid 4 cylinder stuck around for a while but I don't know which axle was used for 4 bangers in 1933 or 34 unless they continued on with the model 18 axle for both the V8 and the 4 banger. The green book sort of indicates that with the differential housing but they don't list the complete axle assemblies in there. I wished that they would have.

Bruce Lancaster · 10-21-2015, 11:50 AM

Sponsored Links (Register now to hide all advertisements)

OK...B axle, same thing as A, is listed as 32.09"
Minor but useful difference between B complete rear and A is that the brake flanges are a tiny bit closer together, eliminating an annoying drum/plate interference seen on A's when hydraulic brakes are added.
18 axle, used on late '32 and all '33-4, is 32.18", an amount you, like Ford, can ignore.
The four cylinder '33-'s got a shorter driveshaft, only dif from V8 rear, because they had to squeeze everything in sight to get the longer B into a shortened engine compartment.
'40 used 81A axle at 32.85. Nearly a universal choice for rodders swapping A and B axles out.

10-20-2015, 03:45 PM	#1
Andy Senior Member Join Date: May 2010 Location: Kerrville, Tx Posts: 2,880	32 vs other rear axle widths I have been looking at a green bible. The listing for a 32 axle shaft is about 5/8 shorter than the later axles. I wonder what the real flange to flange width is. The 32 uses a 24 tooth gear so that would maybe throw the width off. Does it change with the use of 40 brakes? I would also like to know the flange to flange width of a stock 40 rear. I had been under the impression that 33-34 rears were narrow like a 32 but the bible says no. I also found that the early 32 rear used A axle shafts.

10-20-2015, 03:57 PM	#2
V8COOPMAN Senior Member Join Date: May 2010 Location: East Shore of LAKE HOUSTON Posts: 11,184	Re: 32 vs other rear axle widths Andy........The old Street Rodder article in the link below may help ya figure-out the width you're looking for on the '40 rear. If it helps any at all, a '34 banjo housing is 5/16" narrower than a '35-'48 banjo housing. DD http://www.flatheadv8.org/fordrear.htm __________________ *Click Links Below* __ ▼ *'35-'36 W/8BA & MECHANICAL FAN* *T5 W/TORQUE TUBE*

10-21-2015, 11:00 AM	#3
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,411	Re: 32 vs other rear axle widths I've never checked the big green book for the 32 stuff specifically. The A style rear axle for the Model B bangers is pretty much like the model A axles. The Model 18 V8 axle was the first departure from that but I always figured the model 18 V8 axle was the same between the 32 thru 34 cars. As long as they are all model 18. The 200 cid 4 cylinder stuck around for a while but I don't know which axle was used for 4 bangers in 1933 or 34 unless they continued on with the model 18 axle for both the V8 and the 4 banger. The green book sort of indicates that with the differential housing but they don't list the complete axle assemblies in there. I wished that they would have. Last edited by rotorwrench; 10-21-2015 at 11:05 AM.

10-21-2015, 11:50 AM	#4
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: 32 vs other rear axle widths Sponsored Links (Register now to hide all advertisements) OK...B axle, same thing as A, is listed as 32.09" Minor but useful difference between B complete rear and A is that the brake flanges are a tiny bit closer together, eliminating an annoying drum/plate interference seen on A's when hydraulic brakes are added. 18 axle, used on late '32 and all '33-4, is 32.18", an amount you, like Ford, can ignore. The four cylinder '33-'s got a shorter driveshaft, only dif from V8 rear, because they had to squeeze everything in sight to get the longer B into a shortened engine compartment. '40 used 81A axle at 32.85. Nearly a universal choice for rodders swapping A and B axles out. Last edited by Bruce Lancaster; 10-21-2015 at 12:01 PM.