 914/901 Gearbox Serial Numbers, Are they numbered by production year? |
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| gcrotvik |
 Jan 7 2017, 01:02 PM
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#1
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Member  Group: Members Posts: 360 Joined: 16-December 09 From: Portland Oregon Member No.: 11,134 Region Association: Pacific Northwest  |
Are the 914 gearbox serial numbers sequential by year? Is there a chart somewhere?
Thanks, Greg |
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| Dave_Darling |
Jan 7 2017, 05:00 PM
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#2
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914 Idiot Group: Members Posts: 14,984 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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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 |
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| gcrotvik |
Jan 7 2017, 05:37 PM
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#3
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Member Group: Members Posts: 360 Joined: 16-December 09 From: Portland Oregon Member No.: 11,134 Region Association: Pacific Northwest |
The serial number on my 74 is HA28014. Is the HA an indicator of something?
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| rgalla9146 |
Jan 7 2017, 06:17 PM
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#4
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Advanced Member Group: Members Posts: 4,552 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None
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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. |
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| gcrotvik |
Jan 7 2017, 08:13 PM
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#5
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Member Group: Members Posts: 360 Joined: 16-December 09 From: Portland Oregon Member No.: 11,134 Region Association: Pacific Northwest |
Thank you. Very informational.
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| Gunn1 |
Jan 7 2017, 08:25 PM
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#6
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Senior Member Group: Members Posts: 1,021 Joined: 14-February 16 From: Minnesota Member No.: 19,670 Region Association: None |
Great Info........... had wondered about the HA-HB diff
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