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pcar916 pcar916 is offline
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Join Date: Aug 2010
Posts: 30
Yep, DD always has the proper answers! The other, more involved option, is to run either the 914 or 915 (911) transmissions upside-down with cable shifting and the
vent swapped to the new "top".

Additionally, because with either run upside-down...
1. there will be a more extreme CV angle. I'm gonna run 930 CV's with an upside-down 915. They can operate easily with the more extreme angle.

2. When run upside-down under power the differential wants to deflect toward the side-cover. So it's prudent to run a billet side-cover from CMS or Rebel Racing.
CMS has them for both 901's and 914's.

3. The 915 has a 2-piece bearing retainer. You and I run more power (I run a 3.6L 993 engine) so I like the CMS one-piece retainer. It's only slightly more tricky to install.

Note: I chose to go with a 915 because I tired of breaking the 914 pinion teeth. Also,
the 915 is only a little stronger, but there is a lot more meat on the ring and pinion.

Only slightly off-topic!

Good Luck,
Ron
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Ron
Old 12-02-2023, 07:43 AM
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