Switching from a 904 to a 46R?

[Juan Veldez]

Rebuilding the 340 motor to a 376. Originally figured if I didn't hammer the 340 too hard, the 904 transmission would hang. But now I'm doing a rebuild from Scat that will make it a 376ci motor and not sure if the 904 will hang. Also, I want an overdrive as I have 391 gears in the diff.. So, either I add a Gear Venders to the 904 and go easy, or go to a 46RE or 46RH. This is a street car. What ya all say? Thanks in advance for your suggestions.

 

[540HemiCuda]

The 518OD has a much better OD ration compared to the GV's. Which is why I went with one behind my Hemi. But why not the 500OD? With the proper parts, they will hold a good amount of power.

 

[Challenger RTA]

727 to A518 swap a novice guide

727 to A518 swap a novice guide

www.cuda-challenger.com

Your 'Guide' to the 727/904 transmission

Often I or anyone for that matter asks to find out what type of transmission they have in their old mopar. There are hundreds, if not a thousand, of threads on this website identifying, discussing or assisting with this process, troubleshooting or repair. Because of this large number of...

www.forbbodiesonly.com

 

[Katfish]

It's a shame that guide went away with the C-C site.
Me and others used that template for our OD swaps.
The 518 is by far the best mod I've done. Car is so much more enjoyable to drive.

https://postimages.org/][/url]

 

[Xcudame]

@Juan Veldez, go with either the 518 or 500 (46rh or 42rh) before 96 (i.e. 95 and earlier) and it's practically a bolt in deal. Just need to cut a few webs on the over drive housing and grab a new cross member and shorten the drive shaft a couple inches. Search for my posts, I have the pictures on here and I even fabricated a bracket to use your factory center console linkage!

PM me if you want me to make you a bracket and I'll gladly make you one and send it to you! You have to pay the shipping though!