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California Motorsports Inc.

 928-855-5755

cms@californiamotorsports.net

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PORSCHE 901 TRANSMISSION

(prices and availability are subject to change without notice)

CMS_901_transmission

901 trans 1.gif

901 (EARLY) TRANSMISSION SPECIFICATION

 

·         Transmission type(s):  901/XX, 902/XX

·         Original equipment for: Porsche 911 and 912 short wheel base cars 65-early 69

·         Description: 4 or 5 speed H pattern manual transaxle with early Porsche synchromesh and dog leg 1st gear

·         Limited Slip Differential: A ZF 40-80% LSD was optional equipment

·         Speedometer: Mechanical

·         Transmission controls: Rod linkage

·         Clutch: Mechanical/cable, push clutch, 200mm single plate

·         Oil capacity: Approx 2.5L hypoid SAE 90

·         Weight: Approx 119lbs

 

Stock 4 speed gear ratios:

·         1966-1968 911 (902/0):  11:34 A, 19:32 H, 24:27 Q, 28:24 X

·         1965-1969 912 (902/0, 902/01, 902/04):  11:34 A, 19:32 H, 24:27 Q, 28:24 X

·         Final Drive 7:31

 

Stock 5 speed gear ratios:

·         Up to 7/26/65 911 (901/0): 12:34 AA, 18:32 GA, 23:28 O, 26:25 U, 28:23 Y

·         1966-early 1969 911 (902/1, 901/02, 901/07): 11:34 A, 18:34 F, 22:29 M, 25:26 S, 28:24 X or 29:23 Z

·         1965-1969 912 (902/1, 902/02, 902/05): 11:34 A, 18:34 F, 22:29 M, 25:26 S, 28:24 X

·         Final Drive 7:31

 

901 trans 2.gif

911 (LATE 901) TRANSMISSION SPECIFICATION

 

·         Transmission type(s):  901/XX, 911/XX

·         Original equipment for: Porsche 911 and 912 long wheel base cars late 69-71

·         Description: 4 or 5 speed H pattern manual transaxle with early Porsche synchromesh and dog leg 1st gear

·         Limited Slip Differential: A ZF 40-80% LSD was optional equipment

·         Speedometer: Mechanical

·         Transmission controls: Rod linkage

·         Clutch: Mechanical/cable, (late 69 push clutch, 70-71 pull clutch), 215mm single plate

·         Oil capacity: Approx 2.5L hypoid SAE 90

·         Weight: Approx 119lbs

 

Stock 4 speed gear ratios:

·         1969-1971 (901/06, 911/00): 11:34 A, 19:31 HB, 25:26 S, 29:23 Z or 29:22 ZA

·         Final Drive 7:31

 

Stock 5 speed gear ratios:

·         Late 1969-1971 911 (911/01):  11:34 A, 18:32 GA, 23:28 O, 27:25 V, 29:22 ZA

·         Final Drive 7:31

 

901 trans 3.gif

914 TRANSMISSION SPECIFICATION

 

·         Transmission type(s):  914

·         Original equipment for: Porsche 914 70-72 w/tail shift or 73-76 w/side shift

·         Description: 5 speed H pattern manual transaxle with early Porsche synchromesh and dog leg 1st gear

·         Limited Slip Differential: A ZF 40-80% LSD was optional equipment

·         Speedometer: Mechanical

·         Transmission controls: Rod linkage

·         Clutch: Mechanical/cable, pull clutch, 215mm single plate

·         Oil capacity: Approx 2.5L hypoid SAE 90

·         Weight: Approx 119lbs

 

Stock gear ratios:

·         1970-1976 914/4:  11:34 A, 18:34 F, 23:29 N, 27:25 V, 31:22 ZD

·         1970-1972 914/6:  11:34 A, 18:32 GA, 23:28 O, 27:25 V, 29:22 ZA

·         Final drive 7:31

 

 

CMS_901_BILLET_INTERMEDIATE_PLATE

 

CMS_901_bearing_retainer

 

CMS 911 BILLET BEARING RETAINER

 

·         Fits all Porsche magnesium case 901/911 69-71 and 914 70-76  transmissions

·         Precision machined from 4130 Chromoly

·         Better supports both main and pinion shaft bearings

·         Improved design captures the main shaft bearing 45% more than OEM

·         Substantial clearance provided for even non-standard tall 1st gear ratios

·         Perfect fit for bearings and assembly

·         Much stronger than the original cast part

Note:

Deletes shim underneath original retainer if applicable

 

$189

 

901 brt 4.gif

Additional information:

·         Installation instructions pdf

 

 

 

CMS 901 BSP.gif

 

CMS 901 BILLET SIDE PLATE

 

At last, a strengthened side plate for the early aluminum case transmissions!  Fits all vintage Porsche 911 and 912 short wheel base cars 65-68 (some early 69).

 

With the ever so increasing power of today’s race engines and the stick of today’s tires you are starting to put some serious stress on your original cast side cover, especially under track conditions.  As the side cover acts as a thrust plate, under load there can be a tremendous force applied to it, and it can break sometimes causing damage the ring and pinion-or worse.

 

Upgrading to a billet side plate will add significant strength and reliability to the differential section.

 

·         Precision machined from aircraft grade billet aluminum to exacting standards for perfect fit and function

·         Oil passageway for standard taper roller bearing

·         Removable billet clutch cable bracket

·         Uses rubber o-ring instead of paper gasket (part 113.301.185a)

 

Note: The cover is thicker than the original and therefore requires longer studs to be installed.  INCLUDED!

 

$329

Installation instructions pdf

 

CMS_901_BILLET_INTERMEDIATE_PLATE_2

 

CMS 911 BILLET INTERMEDIATE PLATE

 

The factory cast magnesium intermediate plate is known to be problematic.  Original ones tend to crack, have loose or out of round bearing bores or may have worn out shift shaft provisions. 

 

Perfect for street, race, higher horsepower and V8 applications-where the additional strength is really needed!

 

  • Precision machined from aircraft grade billet aluminum to exacting standards for perfect fit and function
  • Replaceable silicone bronze shift rail bushings
  • Input shaft bearing oilier
  • Lightest weight possible, only 4.25 lbs

 

Fits all Porsche 901/911 69-71 and 914 70-76 magnesium case transmissions.

 

$399

Installation instructions pdf

 

CMS_914_BILLET_SIDE_PLATE

 

 

CMS 911/914 BILLET SIDE PLATE

 

We offer a new generation of heavy duty and lightweight billet side cover for your late 901 or 914 transaxle. It will add a fair amount of strength to your diff section and is just plain sexy!

 

Our design features include:

  • A diff bearing oiling provision
  • Uses large 930 turbo diff bearing (999.059.064.00)
  • Removable clutch cable holder can accommodate push clutch (’69 911 only) or pull clutch (’70-’71 911)

 

Note: for 914 applications, no cable bracket is included

 

Fits all Porsche 901/911 69-71 and 914 70-76 magnesium case transmissions

 

$329

Installation instructions pdf

915 gears.gif

ALBINS 901 GEARS

 

Stock gear ratios are designed for drivability and fuel economy and not necessarily for best performance.  Whether you have a stock motor or one that has been tuned your transmissions gear ratios may not be optimum for your driving needs.  Optimizing your gears to match your engines power curves can make a huge difference on the track, often resulting in reduced lap times, and can give the sensation of a gain in power.  Alternative gear ratios can make the car more fun to drive or be more drivable.

 

We carry a wide selection of OEM and Albins gears to suit a variety of applications.  Most racing ratios are only available in Albins new condition.

 

901 GEAR LIST pdf

 

·         901 1ST gear set (includes reverse idler gear) $1390 w/new synchro teeth

·         901 2nd gear set (weld on type; requires core OEM input shaft; requires additional labor-not included in price) $950 w/new synchro teeth

·         901 3rd, 4th or 5th gear set $950 per set w/new synchro teeth

·         OEM used gears $ inquire

 

915 310 CWP.gif

 

ALBINS 901 RING AND PINIONS

 

4.43 and 3.44 available

$3240

 

901 dog 1.gif

 

ALBINS 901 SYNCHRO TEETH

 

Sometimes termed as dog ring or synchro hub, these are the teeth that your shift sleeve/slider engages into.  If you have a bad synchronizer and if you have been grinding going into gear-you probably need to replace this part.

 

These are a direct replacement for both OEM and Albins gears.

 

·         1st gear synchro teeth $199

·         2nd, 3rd, 4th or 5th gear synchro teeth $199

 

PORSCHE 901 USED TRANSMISSION PARTS

 

We huge inventory of good used second hand parts.  Gears, ring and pinions, differentials, axle flanges, shafts, forks, bell housings, nose cones, mounts, etc.