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Need 3.73s for series 2 carrier

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Old 12-12-2008, 09:45 PM
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Default Need 3.73s for series 2 carrier

I am going to be putting in a stall and some gears pretty soon. I already have the stall picked out, but I am having an unreal amount of trouble finding a gear set for the series 2 carrier. My car has 2.73s so that's a series 2 carrier right? Anybody know where I can find some and maybe a price range?
Old 12-12-2008, 09:56 PM
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www.ls1speed.com

Motive Performance Gear Set 3.73 (2 Series Carrier) $189.99
Richmond 3.73 Gear Set -for 2 series carrier $219.99


They have free shipping also.
Old 12-12-2008, 09:59 PM
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Thanks very much for that.
Old 12-12-2008, 10:00 PM
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Which is better?
Old 12-12-2008, 10:02 PM
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No idea, I only have experience with Motive.... they whine, but I think that has to do with the guy who installed them wrong..hahah

Also, if you get the Motive install kit, make sure the pinion seal included is the right one. Apparently somewhere in 99 or 2000 the pinion seal was changed. The one included in the Motive kit was wrong for my car and caused a horrible leak that had to be replaced. I had my rearend taken apart AGAIN over an $8 seal. Not sure if it has been updated in their kit or not...
Old 12-12-2008, 10:23 PM
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Richmond is a softer gear, plus they are supposedly noisier.

I need gears too, check out www.neweraperformanceparts.com/
Old 12-12-2008, 10:54 PM
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I had the Moser 3.73's 2 series and they whined, but sure helped the car out. Good price too.
Old 12-13-2008, 12:34 AM
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Get the AAM 373s, nice and quiet, very tolerant of set up and remain very quiet.
Old 12-13-2008, 07:23 PM
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If I buy the 3.73s for the 2 series carrier, do I need to get the ring gear spacer?
Old 12-13-2008, 09:23 PM
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No spacer required. The spacer is used when a series 3 gear is installed in a series 2 carrier.
Old 12-13-2008, 09:27 PM
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Have one more question. I have found the gears I want on ls1speed.com. I was wondering, do I buy the master install kit and the ring gear spacers cuz I believe they are series three carrier with the install kit or, can I just buy the gears for the series 2 carrier and they will be okay to install?
Old 12-13-2008, 09:31 PM
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I'm looking to do the same install. Anyone have a good feel for increase in 0-100 times? Mostly stock 99 ls1 vert...
Old 12-13-2008, 09:37 PM
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I'm not sure on the numbers, but I have the 2.73s and a buddy has some slp 3.73s in his ss, and it is noticeably quicker through the gears.
Old 12-13-2008, 09:42 PM
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MOT75IK Master Install Kit $99.99

You don't need the gear spacer.
Old 12-13-2008, 09:45 PM
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gears wont necesarily give you more in the 1/4 miles just to let you know.
in my 93Z i went from 3.23 to 3.73 and only gained a tenth in my 1/4 and .25 mph. everywhere else was esentially the same, it just "felt" stronger.
Old 12-13-2008, 09:50 PM
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Originally Posted by shtnfrds
gears wont necesarily give you more in the 1/4 miles just to let you know.
in my 93Z i went from 3.23 to 3.73 and only gained a tenth in my 1/4 and .25 mph. everywhere else was esentially the same, it just "felt" stronger.
Yeah, I only gained 0.1 from the gear swap, but also added heavy 17x11 ZR1s at the same time..so it could have been more.

The stall will be your best performance mod...other than nitrous
Old 12-13-2008, 11:13 PM
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I have heard that a switch from 2.73 to 3.73 can net as much as 3 to 4 tenths off of your et. I know that the stall is the bigger mod, I just figured the 3.73s would go nicely with it.




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