Transmission 901/75 Standard-special option

[gtgroupe3]

Does anyone have or have any information on this transmission, 901/75 Standard-special option: 739-001-739-0002?

Gear set:

B: 14:37/2.643
GA: 18:32/1.778
M: 22:29/1.318
T: 26:26/1.0
Y:28.23/0.8214


Sumner

[Alex Webster]

I think the GA is actually a G in the special gear ratio chart I have, but it looks like a nice box

[Grady Clay]

901/75

1969 MY 5-speed, die cast housing.
“Standard – special option”
Transmission numbers 7390001 to 7390002 – Looks like Porsche made TWO of these. What is your transmission number – 1 or 2?

Gears:
B = 14/37 = 2.643
GA = 18/32 = 1.778
M = 22/29 = 1.318
T = 26/26 = 1.000
Y = 28/23 = 0.8214
R&P = 7/31 = 4.428

Does it have a LSD?

Best,
Grady

[gtgroupe3]

I'm on the road so I don't have the number at hand.

My 901 Transmission is orginal for my '67S and had A,GA, M, S, X, but not noted on the Kardex. I think the gears were changed when the car was converted to a track car in the 60-70's. The "A" is being changed to a "B" along with the normal transmission bits & pieces during the overhaul to match the taller topend.

The 901/75 was the only close match in the Pre-'69 transmissions and wanted find more information.

Sumner