save

 

We have over 40 of the billet box kits on the shelf in the np-205 style and about 20 kits in the Dana 300 style.

To kick off sales and get this new product moving we are marking them down to $599 for this first run only.

when there sold the price goes back to $699

Thanks
Duffy
D.D.Machine
(360)649-4465

 

excuse my retardness, but this would be the crawl bow instead of using a 231 for the crawl box? Would with work with a flipped 300?

 

Awesome setup. Just to be clear, the kit comes with everything required except for a donor case? Does it reuse any shifter bits?

 

For a 231/300 doubler would it be longer or shorterthan your normal it?

 

If this is clocked so the shifter box is sticking off the driver's side, is there room for a double cardan joint to mount? The biggest advantage of this kit to me would be to elminate the need to flip the 231 and run a simple shifter linkage to (or near) the stock 231 shifter.

 

Looks like a nice setup. :smokin:
Wish you would have said something like this was coming, I would have waited.

 

Bigbike
yes the new billet box setup for the Dana 300 does use all your planetary parts from a stock 231 and it is set up so you can flip the Dana 300 upside down and run it for a drivers drop. it well still have the shifter box at the top and give you clocking every 4* so you can clock it down some or clock it up flat.

The billet box for the dana 300 is 7 5/8" mounting to mounting and the normale box4rocks setup is 7 7/8" so its a 1/4" shorter ,,, its as short as one can make to do to the shifter hub hitting the Dana 300 input.

Spidr
yes it comes with a new steel shifter fork and all hardware you well need.
you only need to pull and reuse the ring gear, planetary assembly, snap ring , front seal retainer, and the slider hub.

We make a new billet steel shifter fork to replace the plastic junk the stock cases used, after seeing all the busted up plastic shifter pads we went with steel just like the np-205, np-203 and Dana 20 used for years.

XJH3
The billet box is 7.875 dia and the shifter box sticks out from it 1.3"
so from the center line of the dana 300 input it would be 5.2375" to the top of the shifter box. I would think a cordan joint would clear just fine but you throw a tape on it to check.

Thanks
Duffy
D.D.Machine
(360)649-4465

 

yes it comes with a new steel shifter fork and all hardware you well need.
you only need to pull and reuse the ring gear, planetary assembly, snap ring , front seal retainer, and the slider hub.

We make a new billet steel shifter fork to replace the plastic junk the stock cases used, after seeing all the busted up plastic shifter pads we went with steel just like the np-205, np-203 and Dana 20 used for years.

Thanks
Duffy
D.D.Machine
(360)649-4465

Question for Duffy or anyone who can answer.

I'm assembling my box now. Shifter fork is bare metal but has a hole on either ear of the fork. Is this supposed to have a plastic slider piece swapped onto it or am I supposed to run the bare metal fork on the hub?

.

 

Been waiting for something like this for a long time. Well done Duffy. Time to order up one to mate up to a 205.

 

If a guy had a dodge manual trans with a 29 spline output and wanted to use a 32 or 31 spine 205 would you guys offer anything to connect the two? Very cool product btw!

 

I have a clocking ring on my NP205 now. So I'm looking at adding 6" in total length. Definitely tantalizing!

 

Slobuild57

finding a np-241 dodge 29 spline case is hard. seeing how all the 241 cases used the same planetary parts I would find a cheap GM np-241 and just swap out the 27 or 32 spline input with a new 29 spline input shaft from JBconversions . check the year on the case and if its pre 1994 use part # 1458 and for 1995 to present its part # 1459. the new inputs are only $150 and take about 15 min to swap out.

I have the shafts in stock to run 31 spline ford np-205`s or GM 32 spline 6 bolt np-205 cases

Duffy
D.D.Machine
(360)649-4465

 

Thanks for the reply. I think I'll slowly start to acumulate the parts to make this happen.

 

I am in search of a np241 27 spline now!!!! lol Must have!!!!!

 

Any chance there is a plate that this can be made to work with a fig 8 205? Any adapter plate or anything? I love this but only have a fig 8 205 to work with.

Harley

 

offroadman83

FYI the S10 and S15 used a lot of the np-231 27 spline cases and 99% are marked HD on the tag ( meaning they have the 6 planetary gear set ). its the same gear set they used in the np-241 cases and being that there a odd 5 bolt cases there REALY cheap.


Hoss50
I have made fig 8 to 6 bolt round adapters in the past and should have a new run done in the next few weeks.

Thanks
Duffy
D.D.Machine
(360)649-4465

 

How much longer is the 8 to 6 adapter and what is the ballpark price? Longer isn't a huge issue for me as long as I can get the crawl box, adapter, and intermediate shaft to work together.

I am VERY interested in this setup. I had fully planned on the normal 241/205 crawlbox setup but this is much better IMO. Can you still front shift the 205 with this crawlbox & 205?

Harley

 

The adapter plate is only 3/8" thick. flat head screws going both ways , no threads to pull out.

Look at the first three pics and you can see the cutouts so you can shift a ford or gm np-205 out the front, no mods needed to the np-205 at all.
( 4th pic is the billet box for Dana 300 )

The np-205 billet box is built just like the dana 300 billet box in that it gives you clocking every 4* so you can run it flat or clock it down some to get better front driveline angles.

Thanks
Duffy
D.D.Machine
(360)649-4465

 

What is the price on the fig 8 adapter?

 

will 208 internals works ?

 

Will a np233 27 spline work??? I found one for sale.............

 

Duffy, what is the ballpark price on the round 205 to fig 8 adapter? I need to figure out how many eggs I need to put in my basket. Thanks

Harley

 

the fig 8 to 6 bolt adapters run about $100.
Thanks
Duffy
D.D.Machine
(360)649-4465

 

What exact parts are needed? Would it be cheap to just buy the parts separate?

 

This is probably a really retarded question but would I be able to hang my 1356 on the back of this box? With the correct stub shaft of course

 

Duffy,

I want to build one of these with a 23-spline Jeep input and a 6 gear planetary but my Jeep donor case is a 1990. All I have seen is 6 gear planetary's advertised as 1996+ Is there a 6 gear planetary that will work for this earlier case or do I need to find another donor?