727 W/ 904 internals

[Mark Yacavone]

Originally Posted by Phillip marvetz

Well I guess it's like the pontiac guy's running the chevy bolt pattern transmissions, A little gringing and drilling is o.k with nhra. I guess if I weld a 727 bellhousing to a 904 case all will be fine. Time to fire up the spool gun

Phillip, can you give us a specific example of this?
I can't see the need for such a thing.

[Mark Maez]

Originally Posted by Bob Pagano

Phillip, From what I just read you need an adapter for a c4 to FE, there is a sheild bolt on that works but than thats a gray area.

NHRA allows a an adapter for the FE to c4

[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 Mark Yacavone

Phillip, can you give us a specific example of this?
I can't see the need for such a thing.

Which point Mark? If it is the pontiac/chev trans you need look no further than a certian Firebird. They were protested a few years ago ( At Fallon I believe) and NHRA wouldn't do anything about it. Am I mistaken?.............

[Mark Yacavone]

Originally Posted by Phillip marvetz

Which point Mark? If it is the pontiac/chev trans you need look no further than a certian Firebird. They were protested a few years ago ( At Fallon I believe) and NHRA wouldn't do anything about it. Am I mistaken?.............

Any GM trans worth a crap was made in Chevy and BOP configuration ,or both.
There was even a BOP Powerglide case .
The Chevy pattern 904 mail truck trans isn't legal in S/SS, but still it bolts right up.
The 700R4 o/d is Chevy only, but nobody uses that.
I just don't know what issue you're talking about.
PM me if you want to.

[Adger Smith]

Mark,
The Chevy pattern Mail Truck 904 "is" legal in certain SS classes.

[Phillip marvetz]

Mark,
It's a fact that they were using a modified chevy case, Why? I don't know and don't really care. I don't have to run them heads up so it doesn't concern me.
What does concern me is that GM and Ford racers get to do something Mopar racers aren't allowed to do. The JW bellhousing to bolt a 904 to a big block costs about $400, A protrans is $4000-$5000. It doesn't make sense.
How many GM racers have had to throw away a repairable case because of a cracked bellhousing? This would be a good fix for them also. If NHRA is going to let the Ford racers use an adapter then we all should get that option. Right?

[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.

[Ed Wright]

Originally Posted by Adger Smith

Mark,
The Chevy pattern Mail Truck 904 "is" legal in certain SS classes.

Just the hood scoop cars, right?