Differential Swap
#1
Differential Swap
Did a quick search and it didn't give clear answers.
I have a base 07 6MT open diff 350z. Looking at getting a separate pumpkin to build a LSD differential from an AT 03 350z. From what I gather, the housing from 03-08 are the same. Meaning I could buy the pumpkin then piece together the kit with no issues correct? I understand the Auto came with 3.3 gear and different size stubs. I would most likely end up getting a 3.9 FD. Is there actual different ring and pinions based on Auto vs Manuals? I also understand that the Autos had a thicker ring gear. So if I wanted to reuse the stubs (unequal length) would I have to get a Quaife diff that is designed for automatics? Any clarification would be appreciated!
I have a base 07 6MT open diff 350z. Looking at getting a separate pumpkin to build a LSD differential from an AT 03 350z. From what I gather, the housing from 03-08 are the same. Meaning I could buy the pumpkin then piece together the kit with no issues correct? I understand the Auto came with 3.3 gear and different size stubs. I would most likely end up getting a 3.9 FD. Is there actual different ring and pinions based on Auto vs Manuals? I also understand that the Autos had a thicker ring gear. So if I wanted to reuse the stubs (unequal length) would I have to get a Quaife diff that is designed for automatics? Any clarification would be appreciated!
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travlee (07-28-2016)
#3
The auto differential input flange on the 350Z and G35 are all 4 bolt from what I have seen. The three bolt flanges are from the Auto G37s only.
#4
Hi Tom,
I assume you are the one who bought my old diff on eBay. If you have any more questions, contact me in a PM and I'll send you my personal email address. I sent you a contact request on LinkedIn too. I'm interested in hearing how your project turns out. As for your original question, the ring gear in the A/T is not thicker, it's the pinion that is 20mm larger in diameter to accommodate the extra tooth. On an aside, I got an email the other day from Quaife, they now have a new $1M dollar gear cutting machine from Liebherr. You can Google for it, it's pretty cool. I assume they are looking for contract jobs to pay for it now
I assume you are the one who bought my old diff on eBay. If you have any more questions, contact me in a PM and I'll send you my personal email address. I sent you a contact request on LinkedIn too. I'm interested in hearing how your project turns out. As for your original question, the ring gear in the A/T is not thicker, it's the pinion that is 20mm larger in diameter to accommodate the extra tooth. On an aside, I got an email the other day from Quaife, they now have a new $1M dollar gear cutting machine from Liebherr. You can Google for it, it's pretty cool. I assume they are looking for contract jobs to pay for it now
Last edited by ninevoltz; 08-03-2016 at 03:59 PM.
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