Valve Body Infos on 2004r

[Jürgen2]

Hey all,
can anyone help me with my valvebody? I have an OG-type. I guess the most wanted valvebody is the brf, isn´t it? What are the differences between the bodies at all?
Are there any sites on the web, where I can find some information about the different 2004r valve bodies?

Thanks
Juergen S

 

[petesgn]

http://members.aol.com/powerrslid/thm2004r.html

 

[Jürgen2]

Thanks for that page, but at least I don´t know what the different between my tranny and the other is?
My tranny is a 85 OG, so it was used in B/D Bodies with 307 engines and log 2.73 Rear ratios, but why?
What´s the difference?
I guess with this long rear ratio, there comes more power through the tranny during accerlation, but on the other side the rpms are kept very low during cruising.

Thanks
Juergen S