 912 4 speed trans $1500, covert to 914 |
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| Al Meredith |
 Mar 17 2025, 12:34 PM
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#1
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Senior Member  Group: Members Posts: 973 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061  |
I just finished rebuilding a 912 4 speed transmission # 902/0 with the proper gears A,H,Q,X . This is an early aluminum case and I believe it can be converted to a 914 side shifter. I have heard that the 4 speed was preferred for high torque ( V8) conversion because of the now first gear is not hung out to the rear of the mid plate bearing where it has no support.
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| davep |
Mar 17 2025, 02:04 PM
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#2
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914 Historian Group: Benefactors Posts: 5,262 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
I do not see how it can be converted to 914 use. As you say, it is an aluminum case and therefore the magnesium 914 end cap cannot be properly attached AFAIK. If it was a mag case 901/902, then yes it would be possible with some modifications.
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| mepstein |
Mar 17 2025, 02:31 PM
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#3
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914-6 GT in waiting Group: Members Posts: 19,874 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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QUOTE(davep @ Mar 17 2025, 04:04 PM)  I do not see how it can be converted to 914 use. As you say, it is an aluminum case and therefore the magnesium 914 end cap cannot be properly attached AFAIK. If it was a mag case 901/902, then yes it would be possible with some modifications. (IMG:style_emoticons/default/agree.gif) Why not just sell it to the SWB guys. 912 or 911. |
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| Al Meredith |
Mar 17 2025, 03:46 PM
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#4
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Senior Member Group: Members Posts: 973 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061 |
QUOTE(mepstein @ Mar 17 2025, 01:31 PM) QUOTE(davep @ Mar 17 2025, 04:04 PM) I do not see how it can be converted to 914 use. As you say, it is an aluminum case and therefore the magnesium 914 end cap cannot be properly attached AFAIK. If it was a mag case 901/902, then yes it would be possible with some modifications. (IMG:style_emoticons/default/agree.gif) Why not just sell it to the SWB guys. 912 or 911. I will but like to offer to my 914 friends first if no action here I'll go to 912BBS or other sites. |
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| ClayPerrine |
Mar 18 2025, 07:35 AM
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#5
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Life's been good to me so far..... Group: Admin Posts: 16,312 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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Also, when you convert a 914 to a 4 speed for use with a V-8, you get a taller 1st gear. The 901 factory 4 speed has an A first gear. If you convert a 5 speed, you get a F first gear. The V-8 likes the taller first gear.
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| Jack Standz |
Mar 18 2025, 06:34 PM
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#6
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Member Group: Members Posts: 490 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None
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A stock 912 transmission will give you four speeds in reverse and one forward.
Unless you run it upside down or put the ring gear on the other side, is that even possible or recommended? |
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