Competition dana 80 mini spool

[dzlpwr]

Has anyone ever ran across a spool or a mini spool for a Dana 80 rear? I seen enterprise engine has a nice setup that would work great for pulling but Im just seeing if there are any other options out there that would hold up to sledpulling. Any luck with the lockers out there? Ive already destroyed two detroits in my dana 60 and one in my dana 80. Thanks for any input.

 

[JGheen]

Jeez, destroying 3 Detroits, did you break the actual locker or the gears?? I have not seen any spools for a Dana 80 unless you machine a custom one, only Detroits. Man, those are tough to break, I put 600+ hp to one everyday in my old '71 Chevy and never broke it.



Joe

 

[BigBadDodge]

I believe EEP is the only one right now, but I think Haisley's has one in the works.



Switch to an ARB



BBD

 

[2broke2smoke]

last i checked they were like 800$ ...



someone correct me if i'm wrong ...



for that kinda money i'd get the arb, at least that way you'd have an air compressor too ...

 

[ob1kobi]

There was an add in the classfieds, vendor section I believe, for someone who was making titanium spools, I know they were making them for a 70, but not sure if they were also for the 80's. I have seen them post about them also but can't remember who it was. I did a search under "spools" and couldn't find anything either. Hopefully they will see this post though.

 

[crawler]

Me, Me, Me

Hey Ted,



That was me.



It's a titanium full spool in 40 spline for an 80.



The design being tested right now is for gears <4. 10



If enough people show interest then I'll look at buildind more and for gears >/=4. 10



Later,

Wes

 

[DieselNasty]

What is the difference between a spool and a locker, how is it stronger?

 

[BigBadDodge]

Wes, I am confused, why 40 spline ? I though our D80's had 35 or 37 spline axles



I have the HD 37 spline axles from Haisley's with the driver plates, how does that work with your making ?



BBD

 

[BWillard]

I've been looking into these also. It looks like EEP's spool is for a limited slip carrier. Isn't this the weaker of the two carriers? I've heard of a few people breaking the limited slip carrier, unless the spiders are letting go and taking out the L/S carrier. I did hear that Detroit Locker is supposed to have the 4. 10 and down carrier for sale by the end of the year.



On another note, has anyone tried to upgrade a 32spline fontend? The inards

are easy to get made, but noone wants to make a 33spline outer to go with them!

 

[MMiller]

What is the difference between a spool and a locker, how is it stronger?

A detroit will be a differential, when coasting the unit unlocks, and the axles/wheels can travel at differnt speeds. When under load, or pull, the unit locks up making both axles/tires turn no matter what.



A spool is a solid link between the ring gear and both axles. No differental, both axles turn at the same speed no matter what, and the tires must slip. Spools are usually stronger, as there is no parts, ring gear bolts to it, and the shafts spline directly in to the spool.



I have a hunch that the detroits were broken after a failure of an axle shaft, the do not like to be unloaded harshly.



Michael

 

[crawler]

40 Spline is just cool. Just Kiddin

Scott the reason for the 40 spline is that they are just plain stronger. Since we're not dealing with stock internals anymore (as the spool allows a clean sheet design) then we can make the spline count whatever we choose.



The only real problem is that the hubs don't really accommodate this. So the rear in my truck has custom ends, axles, and hats.



This is not for the average or even many of the above average.



However this will apply to some people and those people are willing to go to these extreme lengths to push their trucks and their sports.



Now back to reality.



If I we're to see a big need (i. e. requests) for a 35 or 37 spline spool then it could be made.



After the spools are cut they are sent out for heat treating and to have the splines broached in at the same shop. So there isn't any real reason that I can't get different spline counts broached in prior to heat treating.



Hopefully I answered everything. If not then just ask away.



Also the spool design being tested was to be put in a drag truck initially so it was done out of titanium to withstand the shock loads that would be applied to it and also to cut down on some of the rotational mass in the drivetrain.

I haven't tested the design in steel yet. However I am considering it.



Later,

Wes

 

[BigBadDodge]

Thanks Wes, perhaps contact Haisley's I know they were looking to do a D80 spool and they might have enough intrest to get it going and sell them. I know if my ARB goes (knocking on wood) I will be looking for a 37 spline spool.



BBD

 

[crawler]

Thanks Scott,



Yeah Patty and I have talked about spools quite a few times. I was going to get a spool from them however they just were'nt ready in time so I just designed one myself and had a good shop machine it out for me.



Later,

Wes

 

[ob1kobi]

Hey Ted,



That was me.



It's a titanium full spool in 40 spline for an 80.



The design being tested right now is for gears <4. 10



If enough people show interest then I'll look at buildind more and for gears >/=4. 10



Later,

Wes

Great, I knew that I had seen it in there, and I think I had seen you mention the progress you had made in some other post, just couldn't remember who it was exactly. Hope this works out for you guys, it definately sounds interesting.

 

[crawler]

Thanks Ted, I appreciate the support.



Later,

Wes

 

[ob1kobi]

no problem, just wish I had seen it before I already decided to go in a different direction.

 

[DieselNasty]

Now I understand, I thought the detroit locker was doing what the spool is doing.

 

[BIG C]

Does ARB or Detroit make a locker for 37 spline axles and <4. 10 gears??

 

[crawler]

I don't know about Detroit and the 37. But I do know ARB makes an Air Locker for 37 spline axles.



I had considered both Detroit and ARB. But, for my application (high horsepower dragracing) a regular locker was not the brightest choice. With a normal locker (Detroit) there is a slight chance that when you launch off the line that your off wheel may not be engaged. If that happens then the truck may jump sideways and possibly into a wall. So that left me with the ARB since it would allow me to lock it in and not worry about it unlocking.



The ARB was going to be around 11-1150 with the pump so I just went ahead and designed the spool and had it made. It did cost more but the difference in price was worth it to me. The spool allowed me to choose the axles I want and allowed me to remove some of the rotating weight out of my drivetrain, as well as simplifies the internal parts of the rear-end.



Later,

Wes

 

[BIG C]

I see ARB makes a 37 spline unit for >4. 10 gears, can anyone confirm the <4. 10 model?