Anyone change out the rear differential gears in their E55 for better accelleration
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MBWorld Fanatic!
Joined: Jan 2009
Posts: 7,659
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From: Atlanta
2006 E55 AMG
Anyone change out the rear differential gears in their E55 for better accelleration
Is there a company that makes aftermarket gears for our rear diffs? I know ours is 2.81 which is more suited for highway runs and not off the line acceleration. Does'nt the SL55 AMG have steeper gears, when I mean steeper, I mean anything greater than 2.81 like 3.00 or 3.55 etc?
That greatly improves off the line acceleration and multiplies torque as the gear gets steeper? Off course the steeper you go, the lower your MPH will be at top speed. So you really want a happy medium?
I am sure there is somebody that has swapped a SL55 AMG rear diff into a E55??
That greatly improves off the line acceleration and multiplies torque as the gear gets steeper? Off course the steeper you go, the lower your MPH will be at top speed. So you really want a happy medium?
I am sure there is somebody that has swapped a SL55 AMG rear diff into a E55??
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Joined: Jan 2004
Posts: 7,092
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
Done. Although I LOVE it, it didn't help me on 1/4 times. In fact since I have done it, I haven't run a fast time yet.
I have fixed every other single thing that could be wrong with this car (just keep going through process of elimination) so if I run her at Sacto in the fall and she tanks, it's the gears.
Only thing keeping it still in is URNEXT's SL55 that ran near 11 flat with all that extra SL55 weight. If she runs that fast in an SL, how bout an E that is lighter.
Cost....don't even ask. There are no specs for shimming SL55 gears into E Diff so you just swap out the entire diff. Ouch. Bout 4-5K and if you need half shafts.....another 800 per. OH and you need the tranny reprogrammed. Used to be hard and $$$, bit easier now I think with a few tuners doing it.
I have fixed every other single thing that could be wrong with this car (just keep going through process of elimination) so if I run her at Sacto in the fall and she tanks, it's the gears.
Only thing keeping it still in is URNEXT's SL55 that ran near 11 flat with all that extra SL55 weight. If she runs that fast in an SL, how bout an E that is lighter.
Cost....don't even ask. There are no specs for shimming SL55 gears into E Diff so you just swap out the entire diff. Ouch. Bout 4-5K and if you need half shafts.....another 800 per. OH and you need the tranny reprogrammed. Used to be hard and $$$, bit easier now I think with a few tuners doing it.
Thread Starter
MBWorld Fanatic!
Joined: Jan 2009
Posts: 7,659
Likes: 67
From: Atlanta
2006 E55 AMG
oh boy, that does seem a bit more complex than I thought. The only reason I am thinking your times are slower is because you maybe blowing the tires off the line. other than that you should be running quicker times with the upgrade. since the swap, you did not get taller tires did you jakpro1?
