Gear ratio info needed 1968 911T and 911L

[Brett Johnson]

I'm updating my 911 Authenticity book and including chapters on the major mechanical items! I've been fighting with the gearbox types for the past week or two. I am pretty much satisfied with the list I have -- though there are many that have no actual end numbers, which is okay -- I guess.

For 1968, I need to know the gear sets for the 911T and 911L. The 4-speed 911T is A/HB/S/Z. I do not know the 901/03 911T 5-speed. The 902/0 4-speed 911L may be A/H/Q/X, but I don't know for sure. I am confused about the 911L 5-speed -- is it a 902/1 or a 902/01? Serial numbers are 3280001- Don't know the gear sets. If you can help or recommend a really great gearbox guy to proof my text, please let me know here or at: 356drb@indy.net.

Thanks and here are the gear ratio codes:

901 Transmission Ratios

First Gear Sets
A 11:34 3.091
AA 12.34 2.833
B 14:37 2.643
C 15:36 2.400

Second Gear Sets
E 17:34 2.000
F 18:34 1.667
GA 18:32 1.778
H 19:32 1.684
HA 20:32 1.600
HB 19:31 1.632
I 20:31 1.550

Third/Fourth/Fifth Gear Sets
I 20:31 1.550
J 21:31 1.476
M 22:29 1.318
O 23:28 1.217
Q 24:27 1.125
R 25:27 1.080
S 25:26 1.040
T 26:26 1.000
U 26:25 0.962
V 27:25 0.926
X 28:24 0.857
Y 28:23 0.821
Z 29:23 0.793
ZA 29:22 0.759

[Jon B]

For 1968, I need to know the gear sets for the 911T and 911L. The 4-speed 911T is A/HB/S/Z. I do not know the 901/03 911T 5-speed. The 902/0 4-speed 911L may be A/H/Q/X, but I don't know for sure. I am confused about the 911L 5-speed -- is it a 902/1 or a 902/01? Serial numbers are 3280001- Don't know the gear sets.

Brett, here's a factory chart published in Sept 67, at the introduction of the 68 model year.
It's a bit easier to read than the chart in the Technical Specs booklet.

The 901/03 ratios were A/F/M/S/Z, and was optional for the 68 911T. The standard 68T transmission was the 901/10 4-speed.
The 902/0 ratios were A/H/Q/X.
The 911L came with either a 902/0 4-speed, 902/1 5-speed or 905/00 Sportomatic transmission. The chart lists the 5-speed as standard except USA.
The 902/01 was a 912 4-speed transmission, not used in 6-cylinder cars.



Jon B.
Vista, CA