What rearend do I have??

[nitronick97]

I am pretty much a nooby when it comes to rear ends. I am really wanting to put 4.10's in my car but don't know what rear end to purchase them for. I have a 97 z28 m6. Any help would be greatly appreciated, thanks guys!

[zboy2012]

7.5 10 bolt rear end with a 3 series carrier. So you need to buy 4.10's for a 3 series carrier.

[SexyTransAm]

If u want a rear to live get a rear that came out with 2.73s and do the gears in that rear. The 2 series gear will live longer. Then keep the stock rear round to put back in once the geared rear lets go, cause it will

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[nitronick97]

I'm pretty sure this rear has the 2.73's. if it ever lets go ill have to make a trip to the local pick n pull haha And I honestly have no idea what you are talking about with the 2 and 3 series carriers......

[Injuneer]

I'm pretty sure this rear has the 2.73's. if it ever lets go ill have to make a trip to the local pick n pull haha And I honestly have no idea what you are talking about with the 2 and 3 series carriers......

All 94-02 M6 cars left the factory with 3.42:1 rear axle. The 10-bolt is sometimes referenced as the 7.5/7.625" 10-bolt.

Gears 3.08 and numerically lower were fitted at the factory to a 2-series carrier.... it's the physical spacing of the flange the ring bolts to, relative to the centerline of the pinion. Gears 3.23 and above were fitted to a 3-series carrier. The gears you buy have to match your carrier. As noted above, if you are looking at a 4.10:1 set, you can buy them for the 3-series, or in a thicker version for the 2-series.

[Featherburner]

All this assumes it has the factory rear and it hasn't been swapped for a 12 bolt/9 inch/S60.

[nitronick97]

Yes this is the factory rear. I wasn't sure what gears are in it now, I kinda felt like they were really low but with the information you have given me I don't have any reason to think that. Thanks guys