who all has a d300 in there bigger than a cj rig?

[dusty]

THAT'S RIGHT. PAVEMENT POUNDER DID HOOK ME UP WITH A RARE TEXAS BOLT PATTERN DANA 300 FOR MY T-18 IN A CJ 7. WAS A GOOD UNIT THAT HAS WORKED VERY WELL.

FOR WHAT IT'S WORTH MARK IS A STAND UP GUY THAT I WOULD VOUCH FOR ANYTIME.


JERSEY JOE

Now don't you two turn this into a mushy back patting contest of a thread.

We want to hear about blood, sweat, tears cracked cases, broken teeth, missing tailhousing. God forbid anyone admit that a D300 is a good t-case in a fullsize rig. Now that i've spewed that random BS



Mark is right the scout D300 (1980 scouts only and a 1/2 year at that) is a hard unit to find and then trying to source a bullgear for it if it didnt come with it is even harder. One option is a new set of gears any terra 4:1 kit will come with a new bull gear........ it should be noted that just like a d20 the scout d300 case is also not clockable.

FYI the scout 300 is the shortest d300 option avaiable since it uses the ultra thin d20 texas pattern adapter when mated to a t-18/19 or to a 727 it can not however be married to a T400 as there is no GM shaft or the 32 spline bull gear on the market.

[Aaron871]

CJ-7
401
T-18
39.5's


He had a good skid plate, this was from torque...

[PavementPounder]

CJ-7
401
T-18
39.5's


He had a good skid plate, this was from torque...

Kind of odd to have a failure like that before breaking the driveshaft u-joint.

[Aaron871]

Kind of odd to have a failure like that before breaking the driveshaft u-joint.

IIRC
He had a wheelin shaft with greasless CTM's and a street shaft with Spicers. He said that the CTM's didn't have any needle bearings and that they were not good at sustained speeds. So he swapped the drive lines before and after a wheeling trip.

edit: and his rear was a cromo shaft 60. We had been chasing the weak link around that thing for a long time, the 401 in it was built with such high compression that it needed 117 octain.... lol. I think that was the problem...

[matt thompson]

gotta love big motor torque, looks like he needs a np205, or stak d300 replace-a-case.

[orangecherokee]

http://www.pirate4x4.com/forum/showthread.php?t=761638

[blt2krl]

http://www.pirate4x4.com/forum/showthread.php?t=761638

Well there is hardcore and then there is everything else.

[moabbigjeep]

727/d300 combo

put in a Klune V and that would eliminate the pan clearance issue.:-)

[Dirtball]

I'm putting together a 727/twin stick 300 combo to stick in my hidey hole for the future... I'll have two 400s and three Qtracs here in about another week, and I'm expecting seals, gaskets, and fluid from BJs this week for my less than 50,000 mile unit that I got recently. Therefore I'm going to run them 'til they break or wear out then go with my other combo. Was thinking of going MM kit... this was good reading to let me know whether or not I want to do this. I'll have to be on the lookout for one of the Scout driveshafts.

[JeepMods]

:::

[brutusvon]

I have a 1975 Wagoneer with about 10" of lift susp and body, 35" tires, 360ci, 4bb carb, headers, dual exhaust with flowmasters, T4 trans and a Dana 300tc. I bought it like this not sure I would have built it this way but so far so good

[fullsizejohn]

Ive got one! Only a few trips on it but so far I like it.

Went with the AA adapter for a 2wd tranny. Changed my T400 to a 32 spline output, used the AA 32 spline input in my d300 and their adapter. All went pretty smooth in and im almost flat with the frame rails, maybe only 1/2" from being flush with the frame. Right now i have the stock drive shafts(recut). I did install the twin sticks just for the bling affect(didnt grind the pills and/or the shaft). Seems to do a good job.

As i beat on it, i will keep ya posted.

[TINMAN93]

300 GRINDER

This is a great thread. Just what I've been looking for.

I've had some 727 issues and a geared T-case has been in the plans for a while so when my third 727 blew up at Hot Springs in Sept, I'm thinking Upgrade!

I have a line on an AMC Hydro400 that I'm planning to use with a Novac adapter. I had thought of going the 205 way,even a divorced one to have equal length shafts, but I like the 300 weight and gearing better.

The issue is I have a Driver side front D44. I didn't read where this was noted in any of the posts.

Has anyone put a H400 with a D300 clocked for a driver side dump?

Or is it somewhere in the post and I missed it?

Tinman

[Greg Taylor]

I'm working on installing a flipped Dana 300 behind a NV3550. I am installing the LONGER AA input, for the flipped 300, so that there is plenty of spline engagement between the NV3550 (flush output shaft) and the D300. The stock dana 300 has roughly 1.25" of spline engagement between trans and t-case. The AA kit input is 3/4" longer and has about 1.25" more spline engagement ... So ... 1.25+1.25 = 2.50 ... 2.50 - .75 = 1.75". 0.75" is the thickness for the flip ring (which DOES NOT come with the AA long input kit).

[dusty]

I would want to know what caused 3 727's to blow up. TH400's and 727's are both good trannies very tough what is causing the failure. tracing the cause before replacing the whole system might be helpful for you. Shoot the 727 came behind the cummins (i've got an old 89 4x4 that we used for a recovery rig on all our peterbilts with turned up pump and big Ramsey 12k winch on the front that we sold at 280k and it only had 1 replacement put in it) and even the TH400 and TH475 had trouble holding up to the 4bt in the bread trucks, something has to be causing the catostophic failure. I hope the swap eliminates it for you

as to clocking yes it can be done and usually for a nominal amount i think my buddy had $250 into his but for $600 one can have a replace a case from stak and the guts froma D300 can be had for $50 on pirate from someone who did a 4:1 swap. or do the 4:1 swap and 32 spline outputs while you are at it wait that can get spendy but you get the gist i think the replace a case is definately the place to start with a flip. but as you see above the flip ising impossible