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> Subaru 5 and new 6 speed cable shift info, The new 6 speed split case.
914Subaru
post Feb 6 2021, 05:27 PM
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The Subaru 5 Speed split case transmission has been around for many years with the later ones have stronger 1st and 2nd gears. They are a linkage shift. I currently have the 5-speed in my 914 and it works flawless.

There are 2 types of Subaru 6 speed transmissions.
The Subaru WRX STI about 2004-? and have a one piece case. These are the biggest, strongest and longest transmission. Linkage shift. Arguably more than you need for most 914's because the extra weight and added rotating mass is not needed. Last I looked nobody makes the coupler to disable the AWD and needs to be welded as been shown on 914World.

The latest is 6-speed split case cable shift that is the same length as the 5-speed. In the US it comes in the the 2015-? WRX. (not WRX STI) also 2014-17 Forester and probably a couple others. There are different ratios between models but externally and fit appear to be the same. Outside the US they came in diesels also. Subarugears.com sells the coupler and rear cover. The only negative I noticed so far is it doesn't have a speed sensor.

I just purchased one out of a 2016 Forester with 43K miles. I will be using the shifter out of the Forester with custom length cables.
The Forester transmissions are selling for less than half the price of the WRX.

Here are some pictures comparing the 6-speed to an old 5-speed. I think this would be a good option to consider for future swaps.

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To quickly identify the STI 6-speed I usually look for this divider plate the red arrow points to.
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Amenson
post Apr 27 2021, 03:29 PM
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From what I can find online the difference is the final drive.

WRX is 4.11
Forrester is 4.44

With the engine you are building Doug...you definitely don't want the 4.44.
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partwerks
post Aug 5 2022, 08:25 PM
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QUOTE(Amenson @ Apr 27 2021, 01:29 PM) *

From what I can find online the difference is the final drive.

WRX is 4.11
Forrester is 4.44

With the engine you are building Doug...you definitely don't want the 4.44.


Which is better for lower rpm's in the road gear?
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76-914
post Aug 6 2022, 08:08 AM
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QUOTE(partwerks @ Aug 5 2022, 07:25 PM) *

QUOTE(Amenson @ Apr 27 2021, 01:29 PM) *

From what I can find online the difference is the final drive.

WRX is 4.11
Forrester is 4.44

With the engine you are building Doug...you definitely don't want the 4.44.


Which is better for lower rpm's in the road gear?

Given the 2 choices from above, the 4.11 would be. If your going 5 speed there are several 3.9 final drive transmissions and two 3.6. Here is a shopping list. https://www.rallispec.com/downloads/Transmi...hart_Public.pdf
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partwerks
post Sep 19 2022, 09:17 PM
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QUOTE(76-914 @ Aug 6 2022, 06:08 AM) *

QUOTE(partwerks @ Aug 5 2022, 07:25 PM) *

QUOTE(Amenson @ Apr 27 2021, 01:29 PM) *

From what I can find online the difference is the final drive.

WRX is 4.11
Forrester is 4.44

With the engine you are building Doug...you definitely don't want the 4.44.


Which is better for lower rpm's in the road gear?

Given the 2 choices from above, the 4.11 would be. If your going 5 speed there are several 3.9 final drive transmissions and two 3.6. Here is a shopping list. https://www.rallispec.com/downloads/Transmi...hart_Public.pdf


I don't see any with a FD of 3.6. I only see one 3.7, but that year is a push style.
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Posts in this topic
914Subaru   Subaru 5 and new 6 speed cable shift info   Feb 6 2021, 05:27 PM
mepstein   Good info. Thanks   Feb 6 2021, 06:06 PM
Mayne   So what’s the benefit of the six speed? Are the ...   Feb 6 2021, 08:19 PM
914Subaru   I haven't driven a 6-speed yet but my thought ...   Feb 6 2021, 09:10 PM
partwerks   I haven't driven a 6-speed yet but my thought...   Aug 5 2022, 08:23 PM
76-914   Hey Ross, Thx for posting that. Here is a list of ...   Feb 6 2021, 10:32 PM
CptTripps   For example: Would this one work? Non-STI 6sp from...   Apr 27 2021, 01:09 PM
914Subaru   For example: Would this one work? Non-STI 6sp fro...   Apr 27 2021, 02:07 PM
914Subaru   [quote name='CptTripps' post='2911445' date='Apr ...   Apr 27 2021, 02:12 PM
914Subaru   [quote name='914Subaru' post='2911459' date='Apr ...   Apr 27 2021, 02:17 PM
partwerks   [quote name='914Subaru' post='2911461' date='Apr ...   Nov 2 2022, 07:37 PM
CptTripps   That should work, it is a split case. I found no...   Apr 27 2021, 02:43 PM
76-914   Thx for that update Ross. How about some pic's...   Apr 27 2021, 02:58 PM
914Subaru   Thx for that update Ross. How about some pic...   Apr 27 2021, 03:49 PM
Amenson   From what I can find online the difference is the ...   Apr 27 2021, 03:29 PM
partwerks   From what I can find online the difference is the...   Aug 4 2022, 06:49 PM
partwerks   From what I can find online the difference is the...   Aug 5 2022, 08:25 PM
76-914   [quote name='Amenson' post='2911475' date='Apr 27...   Aug 6 2022, 08:08 AM
partwerks   [quote name='Amenson' post='2911475' date='Apr 2...   Sep 19 2022, 09:17 PM
partwerks   [quote name='Amenson' post='2911475' date='Apr 2...   Oct 27 2022, 08:26 PM
76-914   [quote name='76-914' post='3020827' date='Au...   Oct 29 2022, 07:13 PM
partwerks   [quote name='partwerks' post='3038146' date='Oct ...   Nov 2 2022, 07:26 PM
Chris914n6   Sounds like they only made the one I wanted for t...   Jan 17 2023, 03:41 PM
ahycaramba   From what I can find online the difference is the...   Jan 18 2023, 10:59 PM
914Subaru   I purchased this shifter cable assembly to see how...   Dec 15 2021, 02:10 PM
rhodyguy   After a brief look elsewhere, why the 6 speed? Wou...   Dec 15 2021, 04:03 PM
cali914   Great info I have the 5 speed set up in the garage...   Dec 15 2021, 07:42 PM
914Subaru   Subarugears.com has a lot of good information on S...   Apr 9 2022, 09:30 AM
partwerks   Subarugears.com has a lot of good information on ...   Aug 4 2022, 09:41 PM
Montreal914   Not in the market for a Subaru conversion but curi...   Apr 9 2022, 01:44 PM
914Subaru   Not in the market for a Subaru conversion but cur...   Apr 9 2022, 04:55 PM
jeff   How difficult would this be to put behind a type i...   Apr 10 2022, 09:25 AM
eric914   How difficult would this be to put behind a type ...   Oct 30 2022, 09:00 AM
76-914   How difficult would this be to put behind a type...   Oct 30 2022, 02:17 PM
kerensky   I have a 3.2 6 in my car and fear really pushing ...   Nov 1 2022, 03:56 PM
914Subaru   Now there is a kit to use the STI transmission....   Jan 17 2023, 12:15 PM


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