I want to get rear end gears in my car now that I read it is possible and have talked to Jerry at Eurocharged already and he is ready when I am. I just can't find a place local to me that wants to do it yet. I didn't think this would be some major operation putting rear end gears in, but the first place that does twin turbo and single turbo kits and work on Ford GTs, Vipers, Jeep SRT8s, among other cars didn't want to do it. WTF!?

I located another place that I have emailed that does work on GM, Ford, Dodge and has "Imports" listed on their site, and waiting to hear back from them now. Came across them on LS1tech site with many having good words for them. My plan is to go with the 3.23 ratio if this place will do it, if they say no then I am not sure where to go next.

I would do it myself since I have always done all my own work, but I just don't have knowledge in rear ends and don't want to mess up anything like getting backlash right or whatever. I haven't looked in to it so hell it could be extremely easy, I just right now would rather pay someone to do it and stay clean

For people that may be in the know, how long does something like this take? And if anyone in the Jacksonville, Florida area knows of a place I should check with let me know!

 

3.23 gear with your combo will be deadly. I went with 3.06's and Jerry hooked me up BIG TIME on the TCU tune for it, without him, this major driveline mod would not be possible.
Oh, PM sent too

 

I think the 3.06 would be the ideal set for these cars. Improves acceleration without shortening the highway gears too much. Be sure to let us know what you think after driving for a while.

 

I forget where you said you got them, think it was in the "Jerry is the man" thread, but where did you get 3.06, from a stock diff out of some SRT vehicle? And they are 215mm to be swapped in to your diff right?

 

Yes sir, $100 shipped for my gears

I went with 3.06's and a 28" slick because of all the TQ my cars make from E85, if I went any higher, it would be useless. I will go through the traps in the mid 6700rpm range with this setup. I was going to a 28" tire regardless, just a matter of top of 3rd or top of 4th.

I feared my car would not 60ft with the 3.73 gear out the hole, just like it cant right now. It turns the hoosiers on the clk rims.

I opted to stay in 3rd for now, but for me, and everyone is different, I could careless about highway or streetability of the gear. I am not into top speed runs, if you want to run on the street, digs or nothing at all for me.

David- I would take into consideration what your plan is for the car before chosing a gear, but since yours is mainly street driven, I think a 3.23 or 3.55 would be BAWS in your sled. It just becomes tricky when chosing a gear for the track as you have to take into consideration alot of other factors.

 

Have you tried AWD motorsports in Coral Springs?

 

It is in no way something I would do for the track, just something to make the car quicker driving around for something more consistently fast. It would be great if it did make it faster in the 1/4 for the rare times I do get to make the trip out of town to a track, but not my main goal.

I have also though about going down in pulley size since so often I am down on a lot of power from it always being hot and humid in Florida and the 180 kills me. I don't know why because it doesn't seem like some others suffer as bad but mine absolutely hates it. I have a car that will trap 111mph to 120mph dependent on if it is 60 or 85 out, it is just stupid. And I have a 180 pulley, Kleeman headers, no cats, Eurocharged heat exchanger, Johnson pump, 80mm throttle body, Eurocharged ecu and tcu tune, 550cc injectors, Paramount Performance valve body and a 1.5 gallon underhood separated coolant tank. You would think the car would be a little more consistently fast.

No but they are pretty far from me, that is about 5 hours away, also I am not sure if they would do something like this, all I know them for is working on Evos and stuff like that. I am trying to find something within 30 minutes or so to make it easy and not some big production to get this done, especially since I am so limited on time. Jacksonville is the largest landmass city in the U.S., you would think I could find a place not to far away.

I am only home for 3 weeks this trip home and at least one of it and probably closer to 2 will be spent in the Florida Keys where there certainly aren't performance shops so I really only have a week. Sucks because I keep coming home for small time periods while I am working overseas so it is hard to get anything done. Then I get to play with it for a small period and then leave which is frustrating!

 

It's a little bit of a drive, but Advance Driveline here in Orlando are the gear whisperers. They do all the subcontract work for local dealerships and I've personally used them 20+ times over the past 11 years, with not one issue. I've never sent a Mercedes there but have sent multiple C5 and C6 Corvette IRS centers to swap ratios.

 

Not sure what your comfortable with or have time to do but if you have a weekend to take your time you can do it yourself. I'm still on stock gears because i was worried about the TCU problems but did the quaife install and it was pretty simple. Hardest part was having the snap on guy come by because i need bigger inverted torx sockets.

 

SLR ran 9's with um, 3.06's would rock!!

 

David if you weren't at the wrong end of the country we'd swap for you! If you want to do it yourself my buddy would be happy to walk through everything.

 

SLR actually shifts into 4th gear near the end of the 1/4. I'd say about 150ft out, I would want to be at the top of the power curve at that stage, maybe 3.23 would work better. From what I've read the SLR 722 comes with 3.17:1 ratio. The SL63 has 3.06.

 

Interesting, it does shift into 4th right at the traps

 

Not optimal for 1/4 mile times I'm sure. If your going to get into 4th might as well wind the gear out.

 

Yup...although he IS trapping 142mph...most of us won't see those traps EVER...lol.

 

Ill be there one day

 

That's why I said most and not all...just because of you..lol.