 914/6 gearbox in a 914/4?, Will it fit? |
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| larss |
 Apr 11 2019, 03:03 AM
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#1
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Member  Group: Members Posts: 431 Joined: 10-September 09 From: Sweden Member No.: 10,787 Region Association: Scandinavia  |
I have been offered a 914/6 tailshift gearbox for my -72 tailshift 914/4, are there any issues in fiitting it in my car?
/Lars S |
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| davep |
Apr 12 2019, 11:23 AM
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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 believe you are mistaken there George. The 914/4& 914/6 transmissions all had 7:31 pinion and ring gears, with the exception of the Sportomatic versions with 7:27 ratio. The 7:31 was common to most 911 & 912 transmissions with only a few exceptions until about 1975 when the 8:31 began to supplant it. The 6:29 ratio for the 1969 912 was considered very weak.
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| dr914@autoatlanta.com |
Apr 12 2019, 12:03 PM
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#3
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914 Guru Group: Members Posts: 8,161 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
Dave you are certainly right, I was thinking of the gear ratios that are different for some of the gears, the sportomatic has the different ring gear and pinion ratio. Thanks for the clarification
QUOTE(davep @ Apr 12 2019, 10:23 AM)  I believe you are mistaken there George. The 914/4& 914/6 transmissions all had 7:31 pinion and ring gears, with the exception of the Sportomatic versions with 7:27 ratio. The 7:31 was common to most 911 & 912 transmissions with only a few exceptions until about 1975 when the 8:31 began to supplant it. The 6:29 ratio for the 1969 912 was considered very weak. |
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Posts in this topic
larss 914/6 gearbox in a 914/4? Apr 11 2019, 03:03 AM
rgalla9146 You'll need the 6 linkage from the shifter bac... Apr 11 2019, 05:12 AM
larss
You'll need the 6 linkage from the shifter ba... Apr 11 2019, 05:16 AM mepstein You could switch the tail cone of the 6 trans to o... Apr 11 2019, 05:22 AM larss Thanks all for responding!
You could switch ... Apr 11 2019, 11:20 AM dr914@autoatlanta.com also the six transmission has a different ring gea... Apr 11 2019, 11:39 AM larss
also the six transmission has a different ring ge... Apr 11 2019, 11:53 AM dr914@autoatlanta.com yes
also the six transmission has a different ... Apr 11 2019, 12:06 PM Krieger The only difference between the two is the linkage... Apr 11 2019, 06:27 AM jtf914 The tail cover is different and you can't use ... Apr 11 2019, 07:04 AM rgalla9146 I have to correct myself.
You'd have to c... Apr 11 2019, 07:37 AM dr914@autoatlanta.com no reason to install it, first of all, having to u... Apr 11 2019, 08:27 AM SirAndy you can sell the six gearbox to a real six owner f... Apr 11 2019, 11:00 AM oldie914 Change the nose cone to 914/4 and it will work. I ... Apr 11 2019, 11:52 AM |
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