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Difference between 2 & 3 series carrier rear end

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Old 11-26-2011, 03:39 PM
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Default Difference between 2 & 3 series carrier rear end

Im planning to get 4:10 gears but there are two options: 2 series carrier and 3 series career What's the difference?
Old 11-26-2011, 03:53 PM
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It was something to do with the stock gear ratio you have. I got 410 gears for mine. Mine has 2:92's in it so yours wont be the same as mine. I believe you can decode your door code info on the net and find out what gears you have. Then you can check with a search engine to see what series that makes your rear end. Sure you can also find the info on ls1tech.
Old 11-26-2011, 04:01 PM
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I believe I have 3:42's but before I get another one I need to know wich one should I get 2 series carrier or 3 series carrier.
Old 11-26-2011, 04:07 PM
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You have an M6, so you have the 3.42s, unless your rear is swapped. A 2 series carrier is a car that came with 3.08s or lower from the factory (i.e. all of your 2.73 cars). A 3 series carrier is a car that came with 3.23s or higher. This is very important when you order new gears, as they will differ from 2 to 3 series carrier.
Old 11-27-2011, 03:28 AM
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Originally Posted by TImmy_Jones
You have an M6, so you have the 3.42s, unless your rear is swapped. A 2 series carrier is a car that came with 3.08s or lower from the factory (i.e. all of your 2.73 cars). A 3 series carrier is a car that came with 3.23s or higher. This is very important when you order new gears, as they will differ from 2 to 3 series carrier.
That means that I need to get 3 series Career then, cause I'm M6. Right?
Old 11-27-2011, 07:09 PM
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Originally Posted by Ronny_02_WS6
That means that I need to get 3 series Career then, cause I'm M6. Right?
Correct. I would just call someone from ws6store.com to order and confirm with them.
Old 11-28-2011, 04:16 AM
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As stated in the above posts,since you're an M6,you would have 3.42s' on a 3 series carrier. You would need 'standard' 4.10 gearset for a 3 series carrier,GM 10 bolt 7.5/7.625 variety.
Old 11-28-2011, 08:53 AM
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https://ls1tech.com/forums/gears-axl...r-end-faq.html

everything you need to know... specifically #12 for your question... but it looks like someone already copy pasted this for you above.
Old 11-28-2011, 05:07 PM
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^ Yup.


Call ws6store.com GREAT guys to deal with and reasonable shipping prices!
Old 11-28-2011, 10:37 PM
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Got it, Thanks!
Old 11-22-2018, 06:48 AM
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Originally Posted by Ronny_02_WS6
Im planning to get 4:10 gears but there are two options: 2 series carrier and 3 series career What's the difference?
I DON'T no the defense between a 2 series or a 3 series can you please explain. 🇺🇸 😎
Old 11-22-2018, 06:54 AM
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Originally Posted by Ronny_02_WS6
Im planning to get 4:10 gears but there are two options: 2 series carrier and 3 series career What's the difference?
I DON'T no the defense between a 2 series or a 3 series can you please explain. 🇺🇸 😎
Old 11-22-2018, 08:20 AM
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A 2 series carrier has the surface of the flange (that the ring gear bolts to) further away from the centerline of the pinion. From the factory it was used for 2.73 and 3.08 gearsets. Because of those ratios,the pinion gear is large,hence the flange needing to be further away.
A 3 series carrier has the surface of the flange closer to the pinion centerline. From the factory it was used for 3.23 and 3.42 gearsets.
If a 2 series carrier needs to be used with the higher numerical gearsets,'thick' ring gear sets are used. Available in 3.42,3.73,4.10.

Pics of pinions and carriers.



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