Hi all. Recently decided to rebuild a spare slant 904 i had lying around. Actually havent gotten to rebuild it yet. Was wondering when does one need to step up a slant 904 to v8 904 internals? I ask cause i also have a v8 904 that i got used from a local tech school, 4 pinion planateries and 4 friction clutch packs, double wrap band ect, but the front clutch i cracked around the input shaft. so i was thinking of using the planeteries and rear clutch. any thoughts? also is there a big holding difference between the double wrap and single wrap low reverse band? Im planing on going through the trans compleatly with new frictions, steels, seals ect. its just for a daily driver that sees occasional strip but id like it to be plenty strong for future upgrades. planning on using a transgo th2 shift kit if it matters. any thoughts are appreciated.

_________________
1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525

There is a difference between the single wrap and the double wrap band.
It has to do with the anchor point in the case and the lever mechanism to activate it.

Richard

_________________
Part of Tyrde-Browne Racing

Hi 75duster. Please keep posting throughout your upgrade to 318 internals. I also have a couple of the 318 904s, one '68 and one '77, and I would also like to do the same upgrade to my Slant Six '77 Aspen's 904. Are you transmissions with or without lock-up?

Olaf

_________________
Aspenized

Funny, this is exactly how I built the 904 I was going to use in my Valiant. I bought a 998 core (this is the 318 version of the 904) to get 4-pinion planetaries and 4-disc clutches, used a Trans-Go TF2 shift kit and put it together very carefully with Borg Warner clutches and a red intermediate band from A&A. Since I'm just not that into bracket racing I never put it in the car. I've got about $300 in parts into the darn thing. I should go put it in the For Sale section.

_________________
Joshua

The double wrap rear band will not work in a slant six case. As stated the slant case does not have the anchor for the band.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

ok thanks for the input. hoping some of the quicker street motor guys will answer this: at what point with a slant is it really necessary to go with the 4 clutch packs and 4 pinion planets? right now it looks like mine will stack up something like this: three disc front clutch, 4 disc rear clutch, and both 4 pinion planets. what do you change to get the "wide ratio" 999 gear set?

_________________
1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525

V-8 904s got the double wrap band about 70-71,S/6 904 got it 77-78ish.I just did a '76 S/6 904 that was single wrap,and I know the '79 S/6 lock-up trans in my volare' is double wrap.Rebuilding a 904 trans is like rebuilding an engine,some tools you must have to do the job right,but you can get by makeshifting other things if your lucky and the trans doesn't need major repairs like bushings or clutch seals.The more specailized tools that you invest in will tackle more extensive repairs than you will run across servicing customers transmissions.I would recomend tearing apart a junk trans to every last part and putting it back together so you can decide if your comfortable rebuilding the good one you have.

_________________
V8?? We don't need no stink'n V8!!

ok. im comfortable tearing into trannys. jsut got out of school at wyotech and working for an independant shop for a guy thats done many many ford trannys,so im usually doing some tranny work. fabricating tools and tool access isnt any issue either. so using the double wrap band wont happen which is fine, but i can use the 4 friction rear clutch and 3 friction front, as well as the 4 pinion planet carriers yes? based on my atsg book from my dad the front clutch is only used in reverse and direct so i dont really need the holding power as much there

_________________
1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525

For the wide gear set look for the Sun gear with two different sized gears.
The related parts must be used.

Richard

_________________
Part of Tyrde-Browne Racing

I stand corrected. Thanks for that info. I was not aware of any slant six 904 having a double wrap band. I thought it was only in the 999. Not even the 998. I need to pull the pan on a 79 core trans I have.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I also wouldn't go ape on the shift kit if your using the stock torque converter.Trans-go makes some very good products that I use all the time,but with the stock converter,it is locked in even during light throttle low RPM shifts,and the TF-2 might shift too firm for your liking.With a hot engine,and a high stall racing converter,it has some slip during the light shifts, that help soften the shifts of a "race type"trans.I would consider turning up the line pressure adjustment on the stock spring,or maybe using the trans-go "no-yo-yo" kit for a true "clean 2 inches of snow off the windshield and go to work at 4:00 AM"type of daily driver.

_________________
V8?? We don't need no stink'n V8!!

ok i picked up my shift kit today, and i read that you can taylor the up shifts earlier or later depending on what you want. would it behoov me to set them a little earlier in the colder months or would it still be a bit to firm?

_________________
1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525

It's a bit late since you already picked up your shift kit, an alternative could have been the 727 and 904 shift correction kit ($39.75) from Oregon Performance Transmission.

Olaf.

_________________
Aspenized

What shift kit did you buy?

_________________
V8?? We don't need no stink'n V8!!

bought a transgo th-2. drilled the holes and deburred it yesterday at work and am waiting for some time to install it in the trans in the car to get it adjusted and make sure it works ok. then ill finish building the trans and swap em

_________________
1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525