4 speed transmission ID help needed
 

need help identifying a four speed transmission from a 1975 911. the number is 48 745 0205. it is a mag case 915 trans. i have used the search but could not find any info on this trans. anyone know the gear ratios of this.

2guard,

48 745 0205

I don’t know about the leading “48” but the “745 0205” is a proper S/N for a ’75 transmission.

745 0205

7 = Transmission for 6-cylinder.
4 = 4-speed, 915/48 (RoW) or 915/45 (USA).
5 = Model year 1975.
0205 = Consecutive serial number.

915/45 USA) is geared:
1st = 11:35
2nd = 20:32
3rd = 25:27
4th = 28:23
R&P = 8:31

and

915/48 (RoW) is geared:
1st = 11:35
2nd = 20:32
3rd = 25:26
4th = 29:21
R&P = 7:31

You will find the Type Number (915/xx) next to the transmission number.

Best,
Grady

thanks for the info.