another newbie question-transmission identification Options

[rfuerst911sc]

I have a 1975 rolling chassis that I need to purchase a engine and transmission for. My plan is to do a -6 conversion and I think I have located a tranny but need to confirm with you experts. The seller believes it is off a 1973 but is not sure as it was part of a "lot" of Porsche parts he purchased. The number on the case is HA 23 02 per emails I've had with the seller, does this number confirm anything? From the pics he's sent it is a side shifter. Any help you guys can provide is appreciated. Thanks (IMG:style_emoticons/default/beerchug.gif)

[Dave_Darling]

That's missing a digit or three.

Up through somewhere in the 73 model year, the transmissions were labeled with "HAO ### ###". The rest of the 73 model year, and later, were labeled "HA ## ## #".

The early ones were "series numbers", in that they went from 1 through whatever, with each transmission assigned a unique one.

The later ones were date codes. I think the first two ## were the day of the month, the next two ## were the number of the month in the year, and the last one was the last digit of the year the transmission was built. (So many late-73 transmissions would end in "2", though the very late ones would end in "3".)

You can find a table with the transmission numbers here:
http://928porsche.net/history914w.htm

This info used to be available elsewhere, but I haven't seen it anywhere but on that 928 site in a while. We should probably have the info available here on the Club site...

--DD

[Lavanaut]

You can find a table with the transmission numbers here:
http://928porsche.net/history914w.htm

In case it'll help anyone in the future, I found an error on the above page regarding engine ID for the 1971 914-6. The 3rd series of engine IDs is listed as:

• 641 4001- 641 0163

...which I've determined should actually be:

• 641 4001- 641 4163

Not nitpicking, this just had me confused and it took me a while (and a couple of other resources) to track down the correct value. Maybe I can save someone else the hassle. (IMG:style_emoticons/default/cool.gif)

BTW, thanks for the link Dave! The other info on the page was very helpful.