Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   Pelican Parts Forums > Porsche Forums > Porsche 914 & 914-6 Technical Forum

LinkBack Thread Tools Rate Thread
Thread Post New Thread    Reply
JEM JEM is offline
Registered User
JEM's Avatar
Join Date: Dec 1999
Location: Kelso,Wa.
Posts: 228
901 transmission numbers

what do the numbes on a 901 trans mission tell me??


JM Motorsports
Custom Paint & Bodywork
81 911 SC ,black
73 914 V8 LS1
83 Audi Ur-Quattro,black
Old 05-11-2016, 04:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Dave at Pelican Parts's Avatar
Join Date: Dec 1969
Location: Silly-Con Valley
Posts: 14,184
Send a message via AIM to Dave at Pelican Parts Send a message via Yahoo to Dave at Pelican Parts
There are several different groups of numbers on a 901 trans. The cast-in numbers are part numbers.

There are stamped numbers at the bottom of the trans, either on the center rib or on a flat boss just to the side of the rib. (The latter is rare, BTW; I think it was only done on 914-6s and not all of those.) So of those might have the transmission type number, which will be different on a 914-4 than a 914-6, and yet further different on a Sporto. (Those are very very rare.) I don't remember the designations off the top of my head, though.

There were two different ways the serial numbers were added. The change-over was in the 72 model year, I believe. Early ones had an actual serial number, while the later ones would only say what day they were built.

OK, according to 901 Series Porsche Transmissionthis page[/url]:

The 914-6 had "914/01 75ynnnn"; the "01" could be "05" for a Sporto, the space could contain "10" for a ZF limited-slip, the y would be 0 for 1970 model year, 1 for 1971 model year; not sure about 72 model year; and the nnnn is the series number.
The 70-72 914-4 had "914/01 HAnnnnnn"; the "01" could be "05" for Sporto (but I don't think that was ever offered on a 914-4), the blank space could have "10" for a ZF limited-slip, the A would also be a "B" for the limited-slip, and the "nnnnnn" is the series number. (I believe a bunch of these did not have the "901/01" stamp, though.)
The 73+ 914 had "HAddmmy", where the "A" could be "B" for a limited-slip, the "dd" was the day of the month, "mm" was the month, and "y" was the last digit of the year of manufacture.

Pelican Parts 914 Tech Support

A few pics of my car:
Old 05-11-2016, 12:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)

Thread Tools
Rate This Thread
Rate This Thread:


All times are GMT -8. The time now is 03:06 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.