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Thread: Differential gears
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09-22-2009, 03:40 PM #1
- Join Date
- Mar 2007
- Location
- Arizona
- Posts
- 8
Black- 2000 WS6
Differential gears
I've been looking at 4.10 and 3.73 ring and pinion change for my 2000 WS6. I've been told that by changing to one or the other that there would be a noticeable difference in performance. I've also been told that Pontiac installed the best combination for performance and the change isn't needed and won't make a bit of difference. Does anybody know what the WS6 came with to begin with and is it worth the expense to change it to 4.10 or 3.73?
Thanks,
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09-22-2009, 03:53 PM #2
- Join Date
- Dec 2005
- Location
- Laurel, Maryland
- Posts
- 4,975
2000 Grand Prix GTP- 2000 Trans Am WS6 M6
In before "omg...go 9" or 12-bolt...stocker will break under stock power"
Stock Gearing = 3.42
3.73s won't give you a real noticeable change, 4.10s will. You will need to get your computer reflashed so the Speedometer will read correctly.
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09-22-2009, 04:03 PM #3
if you have an a4 get 3.73 if you have an m6 then 4.10-atleast these are the most popular choices.
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09-22-2009, 05:03 PM #4
Pontiac geared the car best for milaege and performance. As the others said, for an auto, go 3:73s. For a manual, go 4:10s.
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09-22-2009, 05:14 PM #5
didnt the berger and some other specialty camaros come with 4.10 and stock rear end ? Or did they upgrade the rearend ?
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09-23-2009, 06:24 AM #6
The 10 bolt will not break under stock power, if you know how to drive. And 3.73 gears in a Six Speeder will make a difference. And still keep the rpm's low at 60. Out of my mods, the gears have made the most difference. Make sure to get a new carrier along with the ring and pinion.
3" MagnaFlow CatBack w/Corsa (clone)Tips, Lloyds Custom Floor Mats, SLP Lid, Pro 5.0 W/ Lou's SS, 7.5" Eaton Locker w/3.73, KYB AGX, BMR LCA's, FRA, SSE, 5% Tint, 18x9 C5 Rims w/Falken 452
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09-23-2009, 02:17 PM #7
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09-24-2009, 07:27 AM #8
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09-24-2009, 02:01 PM #9
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09-25-2009, 04:49 AM #10
5 speeds did good all around with 3.73's and the way a 6 speed is geared 4.10's would be good preformance and still run a decent RPM down the highway. From 3.42 you will not loose but maybe a tenth or 2 to the mile per gallon ratio. If you had a 2.73 gear and did a lot of highway then changed to a 4.10 you would see about a half to a full mile lost but the differance between 3.42's and 4.10 is 0.68. guys change from 2.73's to 3.73's in auto's all the time and actually don't loose the millage because most drive around town and it helps thier millage.
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09-25-2009, 10:12 AM #11
- Join Date
- Nov 2007
- Location
- Oregon
- Age
- 37
- Posts
- 698
Sinister, SixGun- 2001 SS, 2002 L36 M5
my 6 speed worked great with 3.89's...luckily ford makes a gear right in between.
def. go 4.10 though
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09-25-2009, 10:33 AM #12
As reference, in my M6 I went from 3.42 to 4.11 when I bought my 9" and the RPM at 70MPH went from 1500 to 1900.
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09-25-2009, 10:43 AM #13
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09-25-2009, 03:52 PM #14
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