My thoughts on d300's

[SCscoutguy]

is it possible that maybe someone swapped in a 80's scout drive train into the travel all?

Highly unlikely. None of the driveshafts would of worked. There would be no provision for the tcase shifter in the transmission tunnel. It would be a ton of work to put a Dana 300 or any married tcase into a Travelall. Are you sure you were not looking at a Scout II Traveler which was a 118" wb version of a Scout II?

[jeeping1974]

well i got a set of j20 axles from a 79 installed into my j10. i tried all the driveshafts and none of them work. the j10's rear shaft is too long and the j20's is too short. the j10's front is too short and i wasn't able to remove the j20's front shaft yet. looks like i'll be making a trip to the drive shaft shop to get a couple of new shafts made up.

[malodin]

probably the best way to go.

[wickedwagon767]

The 300 is such a sweet little hercules.

32-spline front and rear output upgrades are out there from JB Conversions

JB also has the 4:1 kit with the thicker,stronger gears

Stak makes its stout aftermarket case

If the 4:1 is to low all-the-time for some, you can swap the lomax gears into the Stak case, then slide a Klune (2.72) Underdrive in front of it and have two diverse low range options to choose from

It'll only set you back a few grand

[lasinvegas]

with last few d300's vs the world posts it got me to thinking why would jeep put the d300's and not into the 1/2-1 ton trucks

1. AMC's bought everything from everyone else.
2. by the time d300s came out amc/jeep was already fasing the fsj out(yes it lasted until 1990, and the d300 didnt)
3. the d300 didnt last because they switched to drivers side drop and wanted a "more car like ride"
4. by the time the d300 came out amc/jeep had switched the full size rig to a drivers side drop and the 300 is passenger side(that is imho the main reason they didnt put the 300 in the fsj

NOT BECAUSE IT IS A LIGHT DUTY RIG BUT BECAUSE THEY HAD ALREADY "RE-DESIGNED" THE FSJ FOR DRIVERS DROP AXLE.(not yelling imphasizing)

on this same note lots of people say it only came in a light duty non 3/4 1 ton rig but it did come in the 1980 scouts and they are HEAVY big beasts
and i know of at least one person wheeling the piss out of it.

I think that jeep was starting to view the fsj as more of a family luxury rig back then. The reason they were phasing out the 2 door fsj in favor of four door rigs. If you look at the rigs at that time they were mainly push button or levers to get in 4x4 except for a few leftovers.
My thoughts

[Long&Low]

You can always flip the D300 to match the front axle output.

Stak's new case will run around $600, and as far as I know they are marketing them yet. The new case is nice, cuz they are making 3 versions, a flipped case, a standard case, and a narrow case for use in early Broncos that have a narrow frame.

[krek]

The J10 I just bought has a twin sticked Dana 300 in it. This may be the dumbest question ever, but even with the twin sticks the transmission (727) needs to be in Neutral before shifting the transfer case, right?

[fullsizejohn]

Been talking about this for a while but getting close to getting it done now.

Question: Those of you with the TH400/D300 combo. I know you say the case will sit almost flat. If i go with the NOVAK kit ,is that all i need or will i need a seperate clocking ring also?

Tired of tripping over this D300 in my shop

[quikclimber]

ive been working feeverishly for the last 6 moths swapping a new drivetrain under my fsj...i kinda planned it all around the d 300. i went with a doubler and 203, 700r4 in front of that, and finally said goodbye to the 401 for a 350. the case is nice and small and tucks up into the jeep body far better than the quadratrac. ill post a buildup thread someday.

[malodin]

I dont know about the novak adapter(though my thoughts on the adapter is it should come with at least 3 different sets of holes drilled for different angles) i used a factory np style adapter and it went up in there nice and flat

[misfittom138]

I'm seriusly considering swapping my 208 for a flipped, twin sticked, low geared, heavy output shafted 300. It sounds like exactly what I need.

[Coachgreen]

300 or doubler...choices choices...

[jaber]

Ok, my question is what swaps.

I can get a Chevy 3.8 V-6 with a T-4 and it had a 300 behind it. Can I put an NP208 in place and put it into a drivers drop rig?
Will I have to change anything to make this work?
I have the 208, and no funds for a 300. This would be run in a Willys and not see but light wheeling.

[jeeping1974]

You can run a D300 flat behind a TH400 but it comes close the tranny (too close for my taste). You can clock it down some and still have it be above the frame rails. I have mine mounted just about flat and I have something like 2"+ from the bottom of the D300 to the bottom of the frame. I have to pull it out and clock it down some.

[jeeping1974]

Ok, my question is what swaps.

I can get a Chevy 3.8 V-6 with a T-4 and it had a 300 behind it. Can I put an NP208 in place and put it into a drivers drop rig?
Will I have to change anything to make this work?
I have the 208, and no funds for a 300. This would be run in a Willys and not see but light wheeling.

You will have to either swap the output shaft on the T-4 or the input on the 208 if they are not the same spline count. The mounting holes will be close enough where you can get 5 out of the 6 and still be safe.