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3.73's

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Old Mar 18, 2004 | 10:25 PM
  #1  
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Default 3.73's

i have stock 10 bolt with 2.73's i was wondering if i switch to 3.73's if ill need anything else besides the ring and pinion and fluid to make it function
Thanks Guys
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Old Mar 18, 2004 | 11:42 PM
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depending on mileage, I would get the master rebuild kit with bearing and seals. a T/A cover with stud kit might not be a bad idea.

Tom
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Old Mar 18, 2004 | 11:45 PM
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You'll need a new differential (aka carrier) too, 2.73s use a 2 series, 3.73s use a 3 series.
Or another option would be to find "thick" 3.73s that work with a 2 series carrier.
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Old Mar 19, 2004 | 08:39 AM
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you sure they are 2:73?
and I'll do the rear for you, dont go anyplace!!
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Old Mar 19, 2004 | 12:36 PM
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do it right, get a slp take off zexel so your starting fresh, and a gear install kit. Dunno bout that TA girdle, thats good for looks. but if you can get one cheap go for it. looks cool easier to change gear oil i spose.

if you have traction control you don't need a reluctor wheel.

if the dude above is good (go for a ride in his car, should be deadly silent at all speeds) then take him up on the offer. Gear whine and broken gears = incompetent installer or poor parts.

I could have gotten the 3.42 for 2 series carrier, but i figured a fresh zexel instead of whatever they put in the 2.73 cars was a good idea, didn't want peg-leg burnouts.
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Old Mar 19, 2004 | 03:57 PM
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im good. My gears are not silent. Im running thin cut gears with a spool! it is a little loud. My old set up was perfect tho.
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Old Mar 19, 2004 | 05:15 PM
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thanks guys i appreciate all of your input youve all been a great help Brad when im ready ill have to pay you a visit, i actually do have 2.73s i checked the rpo codes on the driver side door
thanks again guys joe
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Old Mar 19, 2004 | 08:28 PM
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Some gear whine isn't due to the installer or bad parts.

Richmond gears tend to be a little noiser than most due to their material/cut.

Also, reverse cut gears are VERY noisy. But these are only really used in front axles.

Just wanted to clarify- of course these are exceptions.

Also- doesn't Richmond make a 3.73 for a II series carrier?
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Old Mar 20, 2004 | 04:24 PM
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the spool is prt of the loudnes. full spool with richmond thin cuts on the street with a lightweight carpet. it isnt do to install.

but yes, back lash and so on is big in gear install.
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Old Mar 20, 2004 | 04:33 PM
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Measure twice...install once
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Old Mar 20, 2004 | 06:09 PM
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you will need a reluctor gear if going from a 2 series to a 3 series. it is for the ABS not the TCS
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Old Mar 20, 2004 | 07:14 PM
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tcs/asr cars have sensors on the axles. non-tcs/asr car do not.
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Old Mar 20, 2004 | 08:04 PM
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I am referring to the reluctor gear that presses onto the carrier for the ABS. I installed gears in my 2.73 car without traction control
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Old Mar 20, 2004 | 10:19 PM
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So is Sam Z28. The wheel IS for ABS. But if you have traction control, there is no wheel on the carrier because there is one on each axle. Like you, I just did the swap on a non-TCS car and had to get the wheel for the 3 series carrier.
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