2.2/2.5 904 trans

[russ jerome]

There must be a few out there, this one was found on E-bay
by Mike Schwochert a few years back. This one is the basis
for my RWD Colt turbo project.



http://hometown.aol.com/russjerome/i...904413frnt.jpg
http://hometown.aol.com/russjerome/i...904sand413.jpg

Glen's site may be a little conservative on the 6 original
test units. Cliff had one, I have another and original rumors
where they were "all crushed". Mine is new as in it has
never sean a gasket or seal from the looks of machineing
area's. http://morris.accesszone.com/rwdadapter/index.html

With all the adapter plates made for TH350's out there, making
an adapter certainly would not be rocket science for a good
machinest.

[john1320]

Isn't that a BIG pony absorber? I heard 25hp and up...

[russ jerome]

727's are the big hit, the 904 is tiny. Actualy may draw less
than out transfer geared FWD tranies? Our trans make an
abrupt turn at end where the 904 has a lot less parts than
the 413.

The internals of the 904 are strikingly similar to my pile of
413 parts laying next to it. If a guy had cash they make
true roller bearings and aluminum drums for all the internals
of the 904 (and any other common RWD trany).

[ombomb]

As I sit here typing this I have a man fabing up an adapter plate for a 904 to a 2.2/2.5

[bfarroo]

Well have him get on it Once the Daytona motor is done I'll need another project.

Benji Farr
Green Bay WI
87 Shelby Z TII 15.2 @ 90.7
88 Shelby Z TI 2.2 auto
91 Shelby TI 2.5 5spd
http://bfarroo.tripod.com
http://www.extremepsi.org

[Tim_K]

I've built a few 904's and 727's and the 904's can be built up pretty strong. I've seen 340 and 360 V-8 drag racing cars running 904's into the 10's in heavier cars than what we have.

904 clutch discs are small compared to a 727, and 413 clutch discs are small compared to a 904. So a built 904 should handle anything a turbo 4 can put into it. And there's a lot of aftermarket drag racing parts for it.

[cj011]

so which is better, 727 or 904?

[The Pope]

Quote:

Originally Posted by cj011 so which is better, 727 or 904?

Do you have a big block, Nitrous of allot of boost with a V8? Think 727

Have a built 4 banger in a light weight car or a well built small block V8? Think 999

And to look like the Simsons. The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999, The 904 is junk use the 999,

The 999 is like a race built 904 you can find in a junk yard in a Diplomat for $50. Use the 904 / 727 valve body and non lock up converter and pilot shaft from a 904. They have a low first gear set thats stronger and they have a 5 clutch front drum vs a 3 clutch POS. Better planets, everything. You wouldn't use a early 80s 404 trany instead of a 89 mini 413 with Neon guts would you?

Rob

[russ jerome]

http://www.moparts.com/Tech/Archive/auto/22.html

Nobody runs stock 904 internals although well built units
have powerd 3000#+ cars into the single digits. 999 guts
are mandatory for HP applications. Every Mopar board has
a 30 page long winded argument about trans strengths,
some bone stock 904 run into the 10's and another guy
who built 7 and none made it a season running 13.0's.

904 full roller trans's (mix n match parts of 999/904), fully
rollerized are replacing 727's all the time. The weight savings
and less paracitic drag shave as much as .750 off there
ET's. All depends on your budget from what I have been
reading .

[The Pope]

As far as budget goes. The 999 parts out right are allot stronger. Sure with big money you can make a 904 stronger, not many on this list spend big money. With not much more than a stock rebuild and ditching the lock up parts and adding a RMVB to a 999 setup. Your trany will live behind the 4 banger and low weight. Thats dirt cheap. Buy a 904 and build it econo and it will slip to death and or out right break. I've run both. The 727 is the cheapest for big power and low money. In your setup you will want a low first gear, to get the engine boost hard fast. The bigger jump to second is fine when it happens under full boost. Still building Mopars I don't believe all of these people. You take a 9 second Road runner and a 727 and switch it to a 999 and it is not going to last as long. Sure it will go faster at first but will get chewed up allot faster. I have built bracket race 727s that last 10 years running low 12s with over 4,000 pounds, really beat on. Many of these 904 people rebuild at least once a year, some many times a year. The last trany I built made 550 WHP and 710 ft lbs and ran 10.2 @ 132 for 4 years. The trany still is fine and is now going behind the new engine, allot more engine. The car in question weighs 3,880. My Challengers old 767 came from a blown alkohol 440 rail that ran low 8s. A 727 with junk yard parts, try that with a 904 lol.

[injmopar]

Russ does that 904 have any numbers on it. On one of the mopar forums someone posted a part number of a trans to ID it. Another poster claimed that the trans was a 904 that was made for a 4 cyl used overseas.of course now I can not find where I seen it. Any numbers at all on it.

[russ jerome]

I'll check it out injmopar, its at work so check back
fri night and it will be posted in this reply.

[BLUEBALL]

Russ if you throw the case away,I'll bring the trashcan so I can recycle it.

[kedavis]

Quote:

If a guy had cash they make true roller bearings and aluminum drums for all the internals of the 904

I believe A&A transmission already does this Ive got the catalog at home I will check I know they do for the 727.

[Mopar1970440]

I had a 904 behind a mild 340 dart (13 second car) ..it held up fine...im told the 904 can be built up pretty tough and it does have less rotating mass then say a 727 trans.