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-   -   904 transmission (https://classracer.com/classforum/showthread.php?t=71712)

cummins 12-12-2018 06:44 PM
Re: 904 transmission
 
Quote:
Originally Posted by Mopar 340 (Post 578436)
I’ve heard many good things about pro trans. Planning on giving them a call soon! Thanks for the helpful info!
Yes pro trans is building me one now for a 340 combo

S/ST 3040 12-12-2018 09:40 PM
Re: 904 transmission
 
Does anybody have a Pro Trans list of letter codes and available gear ratios?


Edit: I found the link in the fine print on their website.

jmcarter 12-13-2018 08:15 AM
Re: 904 transmission
 
Just FYI that on insidecompracing.com you can go to the classified section and generally find some 904 gear sets and trans for sale. Many of the comp folks run Pro Trans.

Jeff Teuton 12-13-2018 12:14 PM
Re: 904 transmission
 
We use Pro Trans. We like the 727 SB more than the 904. Has a few different parts and deeper pan doesn't hit the rotating assembly. You probably need a 2.65 to 275 first.

Mopar 340 12-13-2018 06:21 PM
Re: 904 transmission
 
I’m thinking 2.75 I want to get off the line much quicker than I am now.

GTX JOHN 12-14-2018 12:00 AM
Re: 904 transmission
 
You can try 2.75 inexpensively......They came factory in many late model
904s. They are not straight cut BUT a Huge improvement over 2.45 in a small block.

Duster 7695 12-14-2018 05:15 PM
Re: 904 transmission
 
Pro Trans just did a 904 for my Aspen with a 360. He decided on a 2.61 first and 1.61 for second gear.

Raul


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