3.9 and 4.08 Final Drive Kits in Stock!
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the only way to have it work on an auto would be to swap not only the ring and pinion but also the differential, to one from a manual car. I suspect you would also want to reprogram the ecu for shift points as well (no idea how one goes about doing it). From there, find any online gear calculator, enter the relevant data and it will tell you the speed.
Thread Starter
Former Sponsor
iTrader: (564)
Joined: Feb 2003
Posts: 19,266
Likes: 5
From: Long Island, New York
up!!
4.08 pricing:
4.08 ring and pinion: $590 shipped
4.08 + Install kit 1 (crush collar, pinion seal, pinion nut): $615 shipped
4.08 + Install kit 1 + Install kit 2 (new output shaft bearings, pinion bearings, ring gear bolts, side flange seals (highly recommended for cars with more than 25k miles) - $900 shipped
All the diffs we offer are on our site:
http://www.z1auto.com/submodel.asp?m...&cat=driveline
4.08 pricing:
4.08 ring and pinion: $590 shipped
4.08 + Install kit 1 (crush collar, pinion seal, pinion nut): $615 shipped
4.08 + Install kit 1 + Install kit 2 (new output shaft bearings, pinion bearings, ring gear bolts, side flange seals (highly recommended for cars with more than 25k miles) - $900 shipped
All the diffs we offer are on our site:
http://www.z1auto.com/submodel.asp?m...&cat=driveline
Last edited by Z1 Performance; Oct 29, 2009 at 12:22 PM.
Thread Starter
Former Sponsor
iTrader: (564)
Joined: Feb 2003
Posts: 19,266
Likes: 5
From: Long Island, New York
up!!
4.08 pricing:
4.08 ring and pinion: $590 shipped
4.08 + Install kit 1 (crush collar, pinion seal, pinion nut): $615 shipped
4.08 + Install kit 1 + Install kit 2 (new output shaft bearings, pinion bearings, ring gear bolts, side flange seals (highly recommended for cars with more than 25k miles) - $900 shipped
All the diffs we offer are on our site:
http://www.z1auto.com/submodel.asp?m...&cat=driveline
If you need a ring and pinion + diff combo, let us know
4.08 pricing:
4.08 ring and pinion: $590 shipped
4.08 + Install kit 1 (crush collar, pinion seal, pinion nut): $615 shipped
4.08 + Install kit 1 + Install kit 2 (new output shaft bearings, pinion bearings, ring gear bolts, side flange seals (highly recommended for cars with more than 25k miles) - $900 shipped
All the diffs we offer are on our site:
http://www.z1auto.com/submodel.asp?m...&cat=driveline
If you need a ring and pinion + diff combo, let us know
Thread Starter
Former Sponsor
iTrader: (564)
Joined: Feb 2003
Posts: 19,266
Likes: 5
From: Long Island, New York
3.9 are special order from Japan and considerably more money that 4.08. There is less than a 5% difference between a 4.08 and 3.9, so it really becomes all about personal preference - whether you think the extra cost and extra wait is worth it for the 3.9 vs the 4.08.
It is impractical for us to sell you the exact shims you need as there are simply too many (14 different sizes offered) and you don't know what you need till you go to reassemble everything. The overwhelming majority of people are able to reuse their existing shims.
It is impractical for us to sell you the exact shims you need as there are simply too many (14 different sizes offered) and you don't know what you need till you go to reassemble everything. The overwhelming majority of people are able to reuse their existing shims.