904 beef up; best source for all needed parts?
#2401811
11/11/17 11:29 AM
11/11/17 11:29 AM
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Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
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After some searches I find there are more than a couple of pitfalls in trying to upgrade a 1972 904 to five clutches, in order to handle the 408 I built. With 520 torque, I want to be sure The 904 will live a long life. I plan on using a full manual VB, and will take it to the track with slicks a few times. Who can steer me right and sell me all the right parts?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 904 beef up; best source for all needed parts?
[Re: gregsdart]
#2401827
11/11/17 12:06 PM
11/11/17 12:06 PM
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Joined: May 2003
Posts: 13,200 aZLiViN
J_BODY
I Live Here
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I Live Here
Joined: May 2003
Posts: 13,200
aZLiViN
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what frictions are you using? think you can fit 5 if using the thin ones.
As far as parts... Pro Trans is right across the desert from me so I've been using their stuff here and there.
Last edited by J_BODY; 11/11/17 12:07 PM.
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Re: 904 beef up; best source for all needed parts?
[Re: gregsdart]
#2401828
11/11/17 12:09 PM
11/11/17 12:09 PM
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Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
master
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master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
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Greg, If you aren't bracket racing it every weekend, most of the stock pieces will do the job. 1. Run the thin clutches from low/reverse drum in the high gear drum 2. Multi-spring pack to replace the large wound spring in the high gear drum. 3. I went with the aftermarket front pump gear with the larger lugs to reduce the chance of breaking the converter snout, but I never broke one previously. 4. I added the 300M input shaft on my last upgrade, but I've never broken a stock one. 5. If using a RMVB, try turning up the line pressure a little. the biggest problem with the 904 is burning up the high gear clutches, so more clamping force helps.
I've ordered stuff from A&A, Cope, and TCS. All charge shipping, so try to know what you need and get it all in one order!
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: 904 beef up; best source for all needed parts?
[Re: gregsdart]
#2401850
11/11/17 12:42 PM
11/11/17 12:42 PM
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Joined: Feb 2005
Posts: 1,560 New Smyrna Beach FL
scottb
pro stock
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pro stock
Joined: Feb 2005
Posts: 1,560
New Smyrna Beach FL
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If you use the thinner cluthes and plates you can get five in a 4 plate drum or if you have a 5 you can get 6 in those and yes turn up the line pressure call Rick Allison at A&A I would also put in a 4,2 lever
Last edited by scottb; 11/11/17 12:43 PM.
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Re: 904 beef up; best source for all needed parts?
[Re: scottb]
#2401857
11/11/17 12:49 PM
11/11/17 12:49 PM
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Joined: Jan 2003
Posts: 12,187 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,187
Benton, IL.
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Another vote for http://www.aandatrans.com/. They have helped me with 727s, 904s, and 518s. They have the parts AND the knowledge.
Master, again and still
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Re: 904 beef up; best source for all needed parts?
[Re: gregsdart]
#2401887
11/11/17 01:46 PM
11/11/17 01:46 PM
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Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
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Thanks, guys! And to think in 1985 I let an a999 equipped 360v8 1977 fury go to the bone yard! I could have used both motor and tranny!
Last edited by gregsdart; 11/11/17 01:47 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 904 beef up; best source for all needed parts?
[Re: gregsdart]
#2401900
11/11/17 02:05 PM
11/11/17 02:05 PM
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Joined: Aug 2003
Posts: 43,237 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
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Most of the higher end tranny builders on 904 buy their custom high end race parts from Dave Smith at Pro Trans, he has them built and wholesales them to other volume dealers Call him first for the best selection and prices 661-940-7400
Last edited by Cab_Burge; 11/11/17 02:06 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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