Originally posted by malodin
My thoughts on d300's
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This is a sticky topic.
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John
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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.03 GMC 2500HD - DD/toy hauler
06 Street Glide - Cruiser
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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
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Originally posted by malodinwith 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
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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.Breakfast amounts to one live toad, I choke that mofo down, and I am rest assured that nothing worse will happen to me for the rest of the day.
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CJ truck project
'18 Jeep Renegade
'15 Jeep Cherokee
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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'77 cj-5,
'78 j-10,(not running)
'79 J-10 360ci,t400,D300, SOA-D60w/ARB, 14B w/Detroit,4:56s, 37" TRXUS
'06 Ford F250 super duty crew cab
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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.77 cherokee w/t, built401, th400, QTw/ptkit, d44f, d44r w/detroit, 35\'s, 4in lift...and some other good stuff...dents, and whatnot
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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 flat1977 CHEROKEE CHIEF, 401, SOA FRONT SITTING ON HD44 4.10'S, TH400/D300 COMBO, 14BFF REAR WITH TT'S FAB'S REAR SHAKLE FLIP KIT, RB'S BRONCO TANK MOD. 35'S
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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.Jeff
'43 cj2a
'51 Willys p/u
'51 Willys Parkway Conversion
'68 Panel Delivery
'74 CJ5
'75 J-20 Wrecker
'75 J-20 Cummins service bed
'77 J-10 p/u
'79 Cherokee
'88 Grand Wagoneer
'98 Grand Cherokee
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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.Last edited by jeeping1974; 05-14-2009, 09:05 AM.03 GMC 2500HD - DD/toy hauler
06 Street Glide - Cruiser
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Originally posted by jaberOk, 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.03 GMC 2500HD - DD/toy hauler
06 Street Glide - Cruiser
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