727 W/ 904 internals

[Phillip marvetz]

Where do you get an adapter John?

[Myron Piatek]

Originally Posted by Phillip marvetz

Where do you get an adapter John?

If I may........J. W. Transmissions in Rockledge, FL makes the "Ultrabell" as one option. It's basically an SFI certified flywheel shield as well as an adapter available in quite a few configurations.
I couldn't help but wonder if NHRA could be petitioned for its acceptance in Stock and/or SS based on its safety qualities, as long as a corporate trans is used. (If it hasn't been tried already.) GM and Ford appear to have the luxury of interchangability of their big and small transmissions between big & small blocks. It would save some money over 727 cases with 904 internals.

[bdixon]

Been there done that!!!!!!!!!!! First asked div. passed me on to national both said not yet ...wanted to use 904 with ultra bell for stock in my big block combo,, I do think if more people would call and ask it would help,, it would be a safety issue also the ultra bell is sfi approved..bryan d stk5010

[Mark Maez]

The rules regarding the case being OEM would have to be changed I dont think that should happen in stock, maybe Superstock.

[GTX JOHN]

When we bought the White 73 Roadrunner 6 or 7 years ago it

had the 904 with adapter mating it to the 440. It had been raced

for several years in stock with it and apparently never had a problem.

I did not ask anyone or say anything about it ................ I just removed it!

Phillip: I will go over to shop tomorrow and let you know

who manufactured the unit. It has the trans bell housing machined

off and replaced with a bolt on bell housing with big bolt pattern

adapter and requires no spacers or special flexplate but uses

904 converter of course.

[Phillip marvetz]

Oh, I was thinking something more like a midplate adapter.
Why is that the fords and chevys get to use the small transmissions and we have to go thru so much hassle?

John, I need a converter for the 340. pm me if you have anything good for sale. My faithful old Dynamic came apart last weekend at Ashcroft.

[Bob Pagano]

Its a bolt pattern change thats not legal.

[Mark Maez]

Originally Posted by Myron Piatek

If I may........J. W. Transmissions in Rockledge, FL makes the "Ultrabell" as one option. It's basically an SFI certified flywheel shield as well as an adapter available in quite a few configurations.
I couldn't help but wonder if NHRA could be petitioned for its acceptance in Stock and/or SS based on its safety qualities, as long as a corporate trans is used. (If it hasn't been tried already.) GM and Ford appear to have the luxury of interchangability of their big and small transmissions between big & small blocks. It would save some money over 727 cases with 904 internals.

Lighter torque converter also, how do you petition for something like that?

[Phillip marvetz]

Originally Posted by Mark Maez

Lighter torque converter also, how do you petition for something like that?

You send an email to the NHRA tech guy's. List the reason for the request and and a few example's of others that are doing what you. Then you get enhanced.

[Phillip marvetz]

Originally Posted by Phillip marvetz

You send an email to the NHRA tech guy's. List the reason for the request and and a few example's of others that are doing what you. Then you get enhanced.

I just sent an email to NHRA requesting we be allowed to use an adapter, If enough of us do this we may get somewhere.