where can I look up this tranny?
 

Is this gearbox a 7:31 R&P? And where can I look these up myself? Buy a book or on line somewhere? 7344946

Is the type number worn off?
I'll look it up for you when I get to my office.

Probably worn. Lmk what u find

So glad this wasn't a picture of Ru-Paul.

Here's a website you can use to decode 915 gearboxes. Otherwise the best resource is a spec book. They are sold in ebay and all over the place.
915 Series Porsche Transmission
http://rennlist.com/forums/attachmen...ationbooks.jpg

Decoded:
7 - 6 cylinder engine
3 - model, all US 911, 911s and Carrera were the same
4- year, 1974
#- sequential serial number.

So yes, 7:31 r/p. If you are considering buying it, make the seller remove the sidecover and provide conditions of it. California Motorsports just started a new 915 based FB page and interestingly enough, they posted a picture of a bad 7;31 just this morning.
https://www.facebook.com/#!/pages/Porsche-915-transmission/1543604629208055?fref=nf

Regards,

Matt

Matt. Thx immensely. This is the trans numbers for the twin of the one I posted about. M on running one. Were all 74 911 cars 7:31?

yes.