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> 70-71 911 box for 914-6 conversion, Looking for confirmations...
Montreal914
post Jun 18 2025, 11:42 PM
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I was on the fence between using a 915 or a 901 style box for my 3.2 six conversion until recently where I read a comment from @ClayPerrine that the 70-71 911 (911/01) box was set up with the pull style clutch.

What I have in hand for my conversion:
- 911/01 box
- Three side shift 914 gearboxes
- Various gear set ratios to have fun! (IMG:style_emoticons/default/driving.gif)
- 100mm coarse spline output flanges to go with my 944 CVs

My plan was to use:
- Stock 3.2 flywheel clutch assembly currently on the engine
- Get a 70-71 release bearing
- Get a 72(?) clutch cable that would be straight pull (no cable pulley)

I was going to use the 911/01 bits, flip the R&P, reset the pinion depth, use complementary 914 side shift trans cover, shifting, etc

What I think I am undestanding from this thread linked below is:
- The pull clutch setup works well
- Yes, it can be tricky to get the release fork mating to the bearing upon assembly
- I should not use the 3.2 PP as it will pull the fork pivot bolt?
- I should use a 2.2 PP?
- What disk should I be using?
- Does this simply bolts on the 3.2 flywheel?
- Is the clutch pivot shaft/arm at the pedal cluster different than 914, should I replace it? I just rebuilt my pedal cluster.

Any inputs appreciated (IMG:style_emoticons/default/beerchug.gif)

http://www.914world.com/bbs2/index.php?sho...267204&st=0
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rgalla9146
post Jun 19 2025, 05:45 AM
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You've got the idea right and the parts to do it.
I did the same years ago but never installed it in my car.
I had someone flip the '70-'71 911/01 R&P and assemble the trans with the 914
side shift console and rear cover.
I'm not sure about the clutch cable but I think a certain OE 911 works.
Probably 70-71
The 911 box has a special flange as part of the casting that the end of the cable
attaches to. Clutch adjustment is by length of Bowden sleeve.
I ended up doing a Martin Bott 916 conversion behind a short stroke 3.2
Just getting to drive it recently.
I ended up selling the 70-71 parts
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- Lo-Fi Version Time is now: 19th July 2025 - 03:54 PM