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7AT 3.692 Gear Review

Not much to say here other than it's awesome. Have a 3.692 final drive gear and a Quaife differential and it accelerates so nicely. Car is always in the power

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Old 10-12-2013, 09:43 PM   #1 (permalink)
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Default 7AT 3.692 Gear Review

Not much to say here other than it's awesome. Have a 3.692 final drive gear and a Quaife differential and it accelerates so nicely. Car is always in the power band it seems and is much more pleasant to drive around. Fuel consumption is not really affected. I averaged 24 ish on a road trip with some pretty fast driving. In 7th gear I'm at around 3k RPM's at 80mph. Only negative is that cruise control does not work now. Actually it works intermittently.

The 3.692 final drive gear with the auto transmission is comparable to a manual with the 4.08 final drive gear. Actually I'm geared shorter, minus 5th gear. Speedo is not affected.

Here's where my gears max out (MPH at 7500 RMP)
  1. 34
  2. 52
  3. 82
  4. 118
  5. 167
  6. 194
  7. 217

If a 7AT owner wants a nice upgrade, find a manual pumpkin from a 350 or 370 and plop it in there.

http://www.youtube.com/watch?v=ViwmjsGesDs
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Old 10-12-2013, 10:03 PM   #2 (permalink)
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Is that all you have to do is swap the pumpkin???
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Old 10-12-2013, 10:45 PM   #3 (permalink)
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Is that all you have to do is swap the pumpkin???
yeah
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Old 10-12-2013, 11:52 PM   #4 (permalink)
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Is there any certain year or make for the 350Z pumpkin? I think that will be easier to find.
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Old 10-13-2013, 12:31 AM   #5 (permalink)
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Thanks for the review

I heard EcuTek Tune can get your Cruise Control back with this Mod.

Sounds like a good Mod... What kind of cost?

What year/model pumpkin did you use on yours?
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Old 10-13-2013, 07:51 AM   #6 (permalink)
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Is there any certain year or make for the 350Z pumpkin? I think that will be easier to find.
i'd shoot for a one with a viscus LSD at least, unless you want to get a Quaife too then it doesn't matter.

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Thanks for the review

I heard EcuTek Tune can get your Cruise Control back with this Mod.

Sounds like a good Mod... What kind of cost?

What year/model pumpkin did you use on yours?
yeah i heard that too. need to save up for a tune! for a Quaife and gears it'd be 1200 + i think. mine is from a 2009 370z manual transmission
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Old 10-15-2013, 11:58 AM   #7 (permalink)
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Are you sure those are your max mph's? I think mine are higher on stock rear diff? I can remember shifting out of third at just over 90 and in 4th at 120+
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Old 10-15-2013, 01:32 PM   #8 (permalink)
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Are you sure those are your max mph's? I think mine are higher on stock rear diff? I can remember shifting out of third at just over 90 and in 4th at 120+
they should be higher on the stock 3.357 final drive gear. that's what's nice about the new gear, shorter gearing and much better acceleration. what's sacrificed is top end speed, but that's not really relevant here
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Old 10-16-2013, 12:12 PM   #9 (permalink)
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good review only thing i would add is if it is a 350z pumpkin your are going to want to grab some 370z stub axles of the same type as the ones you take out becauuse the abs rings on the 350z have a different number of teeth
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Old 10-17-2013, 11:12 PM   #10 (permalink)
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If your 7AT is a non-sport model will the swap with LSD still work?

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Old 10-17-2013, 11:51 PM   #11 (permalink)
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If your 7AT is a non-sport model will the swap with LSD still work?

i'm going to say yes you're swapping out the 'non-sport part' so to speak. the only issue is cross platform with G37's. that doesn't work.
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Old 10-18-2013, 01:04 AM   #12 (permalink)
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That's a lot of numbers right of the decimal point.
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Old 10-18-2013, 01:32 PM   #13 (permalink)
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Thanks for the idea and making me spend more money! That should keep the supercharger screaming.
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Old 11-17-2013, 03:32 PM   #14 (permalink)
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Hey Critical....
Any updates on your cruise control or drivability changes? Still wanting to do this Mod but waiting for a "sport" 370z pumpkin to pop up for sale used.

Thanks


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Old 11-17-2013, 06:27 PM   #15 (permalink)
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Default I installed a 350 pumpkin & did notice the teeth difference

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Originally Posted by 1slow370 View Post
good review only thing i would add is if it is a 350z pumpkin your are going to want to grab some 370z stub axles of the same type as the ones you take out becauuse the abs rings on the 350z have a different number of teeth
Installed it anyway, and went drag racing the next day.

I don't have abs light on, but I also never needed to use abs. Would you think that I no longer have the abs working?????
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