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904 durability
#427101
08/03/09 07:18 AM
08/03/09 07:18 AM
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Joined: Jan 2003
Posts: 3,943
Melbourne.....Oz-land
Moparmal
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,943
Melbourne.....Oz-land
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I'm interesed in what sort of ftlbs can be put through a 904 that has steel planetaries and a Continetal 3500 stall converter?
Will it hold together if the engine makes 400 ftlbs?
And what about 450 ftlbs?
67 RO23 clone with 6.1 SRT Hemi and dual quads. Soon to have Drag Pak induction and Throttle body.
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Re: 904 durability
[Re: Moparmal]
#427102
08/03/09 09:06 AM
08/03/09 09:06 AM
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Joined: Aug 2003
Posts: 4,977
new jersey usa
11secdart
master
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master
Joined: Aug 2003
Posts: 4,977
new jersey usa
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I`ve been running a 904 for over 25 years and the only failure I had was because of a driveshaft problem. My current engine makes 460 lbs of torque, I have a 4,700 stall 8 inch convertor and the trans hasn`t been out of the car in over 4 years.
68 Dart 410 / 904
92 D150 original owner
21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4
23 Audi Q5
16 Honda HRV
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Re: 904 durability
[Re: Moparmal]
#427103
08/04/09 12:01 AM
08/04/09 12:01 AM
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Joined: Jan 2005
Posts: 3,699
Newport, Mi
Evil Spirit
master
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master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
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Quote:
I'm interesed in what sort of ftlbs can be put through a 904 that has steel planetaries and a Continetal 3500 stall converter?
Will it hold together if the engine makes 400 ftlbs?
And what about 450 ftlbs?
Yes...
And yes...
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I did a budget 904 for a buddy about 5 yrs ago to get him by till he got the cash for a "good" trans - built from a bunch of my old stuff. Early small servo case, alum planets, 4 clutch forward/direct drums. I did use good clutches/band, a 5.0 arm, and a swap meet 10" T/A converter and Cheetah V/B. It has been in his mid 12sec Duster (on drag radials) for 5 yrs with no issues and he has never even considered another trans. With steel planetary sets the 904 is good for 600hp when built with the right factory parts, good wear items, and a good valve body. 
Free advice and worth every penny...
Factory trained Slinky rewinder.........
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Re: 904 durability
[Re: Moparmal]
#427105
08/04/09 11:24 AM
08/04/09 11:24 AM
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Joined: Jan 2003
Posts: 302
Casa Grande,Arizona
DennisJ
super street
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super street
Joined: Jan 2003
Posts: 302
Casa Grande,Arizona
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The only thing I could add, Is be sure and keep the bands adjusted. I adjust mine a couple of times a season.
My Scamp has a 904 with 3500 converter,a reverse manual valve body. It has been in the car for over ten years. The car runs mid elevens,with a best of 11.46.
Dennis Jokela
I started out with nothing,and I still have most of it.
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