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Registered
Join Date: Aug 2023
Location: Oklahoma
Posts: 134
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915 Transmission year/type investigation
I'm hoping someone out there in Pelican world can help me identify which transmission I have. It is a magnesium case.
The keel has been completely ground off so there is no transmission type or serial numbers available. The bell housing has a casting number of 915 301 101 1R The other casting number is 915 301 102 0R I have uploaded some pictures to help. Can anyone tell me around what year this transmission is from and the support for your answer???    
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08-19-2025, 04:43 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,474
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Electric speedo, 76/77.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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08-19-2025, 05:41 PM
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Join Date: Feb 2009
Posts: 1,012
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What John says. 100mm drive flanges. Nyloc nuts tell us it’s been apart, I wonder if a LSD is installed as ALU tag would indicate.
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08-19-2025, 06:15 PM
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Registered
Join Date: Aug 2023
Location: Oklahoma
Posts: 134
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I very much appreciate this. Please understand I am not a mechanic. This car came with LSD according to the build sheet. It is indeed a 1976 model. I was not aware that the aluminum tag indicated a limited slip.... I turn the drive flanges and the opposing side turns in the opposite direction... doesn't this mean that the LSD is not installed?
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08-19-2025, 06:41 PM
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Join Date: Feb 2009
Posts: 1,012
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Yup, in neutral, with LSD, drive flanges would rotate in the same direction.
Last edited by gled49; 08-19-2025 at 07:42 PM.. |
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08-19-2025, 06:48 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,559
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It’s really easy to pull the side cover and find out. A wornout factory lsd with no preload will sometimes behave like it’s open.
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1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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08-20-2025, 05:14 AM
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