Rear End Swap

[toothandnail0]

I'm new to the ZHP world and I'm not too mechanically inclined, either.

My father swapped the rear end on his non-ZHP 330 to get from a 2.93(?) final drive to a 3.46 final drive ratio. He's suggesting I do the same on my ZHP as he likes the quicker acceleration and because reducing top speed has few implications at non-Autobahn speeds of daily driving.

My mechanic is quoting me at ~$900. Is this kind of mod worth it? What are the cons (besides price)?

[Hermes]

Is that with labor? Get a M3 rear end (Limited Slip)

[az3579]

That quote definitely doesn't include the cost of something. $900 is far too cheap, even if it's just parts alone.


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[JohnnyGraphic]

If that is the price for a non-limited slip including labor, then I think it's reasonable. Maybe even a bit high. The labor isn't that difficult and you might be able to source a 3.46 from an automatic (I'm assuming you have a 6 speed) that will fit right in.

This was one of the first 'performance' upgrades I did on my car. IMHO, it is one of the MOST worthwhile upgrades that you can enjoy in just about every gear on any street.

Johnny

[az3579]

Oh wait, hold on a second... Are we talking about an M3 rear end swap or a regular???


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[toothandnail0]

$900 includes labor.

I'm pretty sure this is not the M3 (limited slip) rear end. Besides the limited slip diff, what is the difference between the M3 rear end and a non-M3 rear end? Would that have a 3.46:1 ratio as well or even higher? Would a limited slip diff. affect my all-around/everyday performance?

And, yes my car is a 6 sp.

[Taliben]

I dunno man, you could source the parts for way cheaper and just do it yourself.

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[HokieZHP]

How much does a m3 LSD swap cost assuming I did the labor myself?

[az3579]

$900 includes labor.

I'm pretty sure this is not the M3 (limited slip) rear end. Besides the limited slip diff, what is the difference between the M3 rear end and a non-M3 rear end? Would that have a 3.46:1 ratio as well or even higher? Would a limited slip diff. affect my all-around/everyday performance?

And, yes my car is a 6 sp.

The difference is that the M3 diff is a limited slip diff. The standard E46 one is not.


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[Taliben]

Depends on where you got it from, but just for parts, i got quoted anywhere from 1200 to 2000 and that was a buddy's pricing.

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