rear end identification
 

i have a rear end in my 35 cabriolet that is not a 35 but rather a 37-40 how do i tell what year it is.

Re: rear end identification
 

Well, if it has the original backing plates, 37-38 were cable brakes and 39-40 were hydraulic.

Re: rear end identification
 

nope juice brakes 46-48 backing plates

Re: rear end identification
 

Don't think there is a lot of difference in the axles themselves. What are you attempting to figure out?

Re: rear end identification
 

i would just like to know for maintenance in case there is a different in bearings or stuff like that

Re: rear end identification
 

A picture would be helpful.


Sent from my iPad using Tapatalk

Re: rear end identification
 

ill try to post one

Re: rear end identification
 

Here's a link that will help you identify what you have.


http://goldengatev8.org/images/Stree..._magazine.html

Re: rear end identification
 

35-36 radius rods which have the spring hangers attach to a bracket towards the end nearest the backing plates on the axle tubes.37-40 has a solid driveshaft so there is a grease zerk on the torque tube to service the bearing.

Re: rear end identification
 

thank you so much is there an outword resistance between teh 37-38 and 39-40?

Re: rear end identification
 

sorry outward appearance

Re: rear end identification
 

Mike it would just be the rearbones that Deuce Lover mentioned as the 35 36 mounted on the axle and later would be mounted on the ends by the backing plates.

Re: rear end identification
 

i know it is a 37-40 but is there a way to tell if it is solid driveshaft or hollow driveshaft without taking it apart

Re: rear end identification
 

No easy way of doing that I can think of ? Maybe pull off the speedo housing on the tube and scope it

Re: rear end identification
 

had not thought of that i have a scope is it obvious the difference between the hollow and the solid at the front of the tube

Re: rear end identification
 

*Note....not all '37's (or '38's) left the assembly plants with a solid driveshaft, center of driveshaft bearing, and zerk grease fitting in center of torque tube. These were transition years between tubular vs. solid driveshafts. The additional things to look for on '37-'40 rear axles would be that the rear radius rods/bones attach by the two lower backing plate bolts, and the spring hangers are integral parts of the axel housing assemblies instead of being attached to the back of radius rods/bones as '35-'36 were. So, the rear end "assemblies" from '35 to '40 (+ '41 PU's) are for the most part, interchangeable.

Re: rear end identification
 

If it has the zerk fitting it is a solid shaft

Re: rear end identification
 

No difference apparent on the outside. Inside, the only difference being the axles teeth changed from 18 to 16, and the matching Spider gear. Those sets are interchangeable. Pull up the link I posted previously for pictures and text.

Re: rear end identification
 

thanks to everyone for their help

Re: rear end identification
 

There's the 10-spline vs 6-spline pinion deal, which I didn't notice as being mentioned. I opened what I think was a 37 recently, which had the 37-up spring hangers, but had the hollow-tube d/s (which many people associate with 35-36), and it had a 10-spline pinion (which is generally considered for earlier). All I'm suggesting is, hard to tell what you really have, without looking inside. And, even then, you probably won't be able to pin down an exact year. And, after you learn all of this, then, for what purpose?
Go with the basics... 35-36 has spring hangers on the radius rods. 37-40 has spring hangers forged on axle housing ends. No zirk fitting on TT means 35 up to somewhere around 37-38. A zirk fitting on the TT means somewhere around 37-38, up to end of that style (40). Some might say 41, but 41 introduces another can of worms (unique spring hangers). Clear as mud? JMHO