Transmission Adapters

[GTX JOHN]

I wish there was an accepted adapter to use a
904 behind a Big Block Mopar.

There are adapters that we use in our bracket cars
but not NHRA approved (I do not think any are for Mopars).

Boy would that save us some money.

[Mark Yacavone]

Originally Posted by GTX JOHN

I wish there was an accepted adapter to use a
904 behind a Big Block Mopar.

There are adapters that we use in our bracket cars
but not NHRA approved (I do not think any are for Mopars).

Boy would that save us some money.

John, I think you'd have a good case for this, after seeing what's already out there.
You'd have to use a flex plate spacer, along with one that would bolt up on both ends.
You'll need a pilot adapter for the added length and the small to large pilot difference.

Maybe there's a few guys here who could tell you how to get this one added to the seemingly nonexistent approved adapter list. ;-)

[MR DERBY CITY]

Hey YAC, open can, turn upside down?. Observe worms

[GTX JOHN]

We already run a 904 with adapter and a custom
convertor on our bracket cars.

[jmantle]

Originally Posted by GTX JOHN

I wish there was an accepted adapter to use a
904 behind a Big Block Mopar.

There are adapters that we use in our bracket cars
but not NHRA approved (I do not think any are for Mopars).

Boy would that save us some money.

I have to wonder if anyone has approached JW for a 904 ultrabell. They do list one for the 727. There isn't a generous number of pump bolts on a 904 but it has as many as a 200 and I haven't had a bell fall off of a 200.

[Ken Parkman]

Originally Posted by jmantle

I have to wonder if anyone has approached JW for a 904 ultrabell. They do list one for the 727. There isn't a generous number of pump bolts on a 904 but it has as many as a 200 and I haven't had a bell fall off of a 200.

There is supposedly one for sale locally which has nothing to do with me. Pat, now retired, was a big 904 proponent so it's possible he had some made by JW. The bolt pattern looks right, but can't say for sure.

https://www.facebook.com/marketplace...d-aebe0a0dd239

[GTX JOHN]

Originally Posted by jmantle

I have to wonder if anyone has approached JW for a 904 ultrabell. They do list one for the 727. There isn't a generous number of pump bolts on a 904 but it has as many as a 200 and I haven't had a bell fall off of a 200.

I do have an issue with the trans occasionally getting loose on the adapter on the trans on the 904.
It was in a 440 Roadrunner stocker that I bought. I removed it before
I got bounced back then some years ago. Probably would not make a difference
any more but I will not to care to chance it anyhow!

[Coleydog]

Originally Posted by GTX JOHN

I wish there was an accepted adapter to use a
904 behind a Big Block Mopar.

There are adapters that we use in our bracket cars
but not NHRA approved (I do not think any are for Mopars).

Boy would that save us some money.

Well I think Cope just made a 727 SFI case-bell, why not a 904 case to big block bell? Maybe it is in the works since the bell is separate. No shield needed then! Then farther, make it so any PG or 400 vert could be used, endless possibilities right there. God I hate this spell check BS!

[340Cuda]

My understanding is that Cope has made a SFI approved 727 case with adapters for both big and small block Mopars.

I also believe that the 727 case will hold 904 guts, I think I read that.

I don't think he is actually selling them yet, still testing, but I would think soon.

[Paul Precht]

Originally Posted by 340Cuda

My understanding is that Cope has made a SFI approved 727 case with adapters for both big and small block Mopars.

I also believe that the 727 case will hold 904 guts, I think I read that.

I don't think he is actually selling them yet, still testing, but I would think soon.

An SFI 727 case that could use 904 parts would be a great thing IMO.