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914World.com _ 914World Garage _ 914/901 Gearbox Serial Numbers

Posted by: gcrotvik Jan 7 2017, 01:02 PM

Are the 914 gearbox serial numbers sequential by year? Is there a chart somewhere?

Thanks,

Greg

Posted by: Dave_Darling Jan 7 2017, 05:00 PM

It's more complicated than that. Up into 73, they did have sequential serial numbers. After that, they basically just used the date, or I think the week within the year.

--DD

Posted by: gcrotvik Jan 7 2017, 05:37 PM

The serial number on my 74 is HA28014. Is the HA an indicator of something?

Posted by: rgalla9146 Jan 7 2017, 06:17 PM

HA means open diff.
HB is limited slip

On a 914 6 the last 4 sequential numbers on the trans are often about 10 to 50 from the chassis number in the rear trunk.
The casting month/year is cast into the three large pieces on all transmissions.

Posted by: gcrotvik Jan 7 2017, 08:13 PM

Thank you. Very informational.

Posted by: Gunn1 Jan 7 2017, 08:25 PM

Great Info........... had wondered about the HA-HB diff