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Rear Differential Help

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Old Dec 8, 2008 | 06:08 PM
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Default Rear Differential Help
Hi Guys,

Turns out on my 2001 convertible 6 speed, that the rear diffential is bad. I have two questions...

1. Anyone have experience with RPM Transmission or Rockland Standard? I have reccomendations from both...

2. The car has a 3.42 now, should I swich to a 3.90?

Thanks Guys!!
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Old Dec 8, 2008 | 06:26 PM
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Originally Posted by bschmergel
Hi Guys,

Turns out on my 2001 convertible 6 speed, that the rear diffential is bad. I have two questions...

1. Anyone have experience with RPM Transmission or Rockland Standard? I have reccomendations from both...

2. The car has a 3.42 now, should I swich to a 3.90?

Thanks Guys!!
RPM is the way to go. I have bought several units from them and have had no problems.

Don't know why you want a 3.90 unless you're a drag racer.
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Old Dec 8, 2008 | 06:41 PM
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Originally Posted by ajg1915
RPM is the way to go. I have bought several units from them and have had no problems.

Don't know why you want a 3.90 unless you're a drag racer.
RPM is the way to go. A gear change will cost nothing when they are swapping diff's....depends on what your goals are as to the gear!
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Old Dec 8, 2008 | 06:42 PM
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Thanks, the car is stock, thought the 3.90 would make it quicker. It costs the same amount.
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Old Dec 8, 2008 | 06:43 PM
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I want quicker acceleration. For a stock car I assume I don't need the heavy duty version...correct?
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Old Dec 8, 2008 | 06:51 PM
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Originally Posted by bschmergel
I want quicker acceleration. For a stock car I assume I don't need the heavy duty version...correct?
All depends on how you drive it.
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Old Dec 8, 2008 | 08:34 PM
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For stock horsepower they will probably say stage I - but for piece of mind I would go stage 2.
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Old Dec 9, 2008 | 05:38 AM
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I would go 3.90, it makes 6th gear on the highway so much more useable. Also, while in there you might consider some upgrades.
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Old Dec 9, 2008 | 01:46 PM
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what about the 4.10 with a 6 speed? anyone drag race and also drive on the highway with a 4.10? What kind of rpms?
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Old Dec 9, 2008 | 01:51 PM
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Originally Posted by Ksths2
what about the 4.10 with a 6 speed? anyone drag race and also drive on the highway with a 4.10? What kind of rpms?
Go here to figure out.

http://xse.com/leres/bin/gearratio?t...mference=87.96
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Old Dec 9, 2008 | 01:52 PM
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hmmm, cool link thanks AJG1915
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Old Dec 9, 2008 | 01:54 PM
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No problem.
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