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**LouisC** · 10-22-2007, 11:56 AM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

I'm 90% sure it's 3.23

**Blip55** · 10-22-2007, 12:54 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

dude if you have an m5.. dont go 3.73 unless your like track only. you will hate it. you will have to be in 5th gear @ like 40.. and im not talking about saving gas 5th gear, im talking you will go through all of your gears by the time you hit this speed. (shifting at 2500 or so)

and it is 3.23, you cant put 3.08 into an m5 v6. the gears are just too long for our v6's.

**Smoke Panther** · 10-22-2007, 01:42 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

^Completely incorrect and wrong on every account. At 40 MPH in 5th gear, you'll be turning 1600 RPM. And actually, the first gear ratio in the A4 tranny is shorter than the first gear in an M5. So yes, a M5 can actually handle 3.08s better than a A4. Please try and have the slightest clue as to what you're talking about before you post.

http://www.f-body.org/gears/
^here's a gear calculator to help you before you start spouting your garbage again

**FloydSummerOf68** · 10-22-2007, 03:50 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

Eaton > All in drag racing

I loooove my eaton

3.73s are a great gear for mixed city/freeway driving.

4.10s if you do less than 30% freeway.

3.23s if you do mostly freeway.

**Blip55** · 10-22-2007, 05:14 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

okay thanks for being a **** and proving me off by a few mph.. please read my ****ing post... i said DD at 40 mph you will be in 5th gear.. now in 5th gear, you said at 40 you will be doing 1600rpm.. now i would say an average driving RPM should be 2000-2500 (depending on when you feel like shifting, etc).. so basically i was off by about 20-30mph

Originally posted by Smoke Panther

^Completely incorrect and wrong on every account. At 40 MPH in 5th gear, you'll be turning 1600 RPM. And actually, the first gear ratio in the A4 tranny is shorter than the first gear in an M5. So yes, a M5 can actually handle 3.08s better than a A4. Please try and have the slightest clue as to what you're talking about before you post.

http://www.f-body.org/gears/
^here's a gear calculator to help you before you start spouting your garbage again

**Smoke Panther** · 10-22-2007, 05:35 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

First off, this

Originally posted by Blip55

proving me off by a few mph

and this

so basically i was off by about 20-30mph

do not belong in the same post. 20-30 MPH is more than "a few mph."

It is because online gear calculators exist and can be used by anyone, there is no reason, nor excuse, to be guessing on engine RPMs and speed...however, one has to wonder how substantial your input on 4.10 gears really is, since you've never actually had them.

**Blip55** · 10-22-2007, 05:46 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

okay so you basically realized i was right and automatically assume that I would chime in on a 4.10.. well No, i would not because i have never seen 4.10 in action at all.. sorry, try again

**Smoke Panther** · 10-22-2007, 06:39 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

Originally posted by Blip55

okay so you basically realized i was right

No, you're still wrong. You don't go thru all your gears to get to that speed, even "shifting at 2500 or so," and M5's can handle 3.08s just fine

Originally posted by Blip55

dude if you have an m5.. dont go 3.73 unless your like track only. you will hate it. you will have to be in 5th gear @ like 40.. and im not talking about saving gas 5th gear, im talking you will go through all of your gears by the time you hit this speed. (shifting at 2500 or so)

and it is 3.23, you cant put 3.08 into an m5 v6. the gears are just too long for our v6's.

^quoted so you can't go back and edit

**Blip55** · 10-22-2007, 06:43 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

okay excuse me, i was wrong about the gears being too long.. but your still not admitting i was right about your going to have to be at (originally i said 40mph) but now proven to be about 60.. in 5th gear.

you lose, give it up. the main point about this whole argument has been proven. with 3.73's, you will have to be in 5th gear by about 60mph for DD and if your doing freeway and DD, thats just plain un-efficient

**RadRacer** · 10-22-2007, 06:46 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

I have a M5 w/3.73's and I love them. I MAINLY drive highway too. Shifting at 3500 with a few lead foot pulls gets me 26-27MPG. Right now I'm shifting at 2500 just because I've got to save gas as much as possible. My last tank came out at just under 29MPG. 3.73's + M5 = Fun and Wallet Friendly! Blip, have you ever had 3.7'3s in your car? I hit 5th at about 50MPH right now.

**Smoke Panther** · 10-22-2007, 07:05 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

Originally posted by Blip55

but your still not admitting i was right about your going to have to be at (originally i said 40mph) but now proven to be about 60.. in 5th gear.

Yea, the only point you've made is tantamount to saying "ur gonna b in ur top gear on teh highway." I'm in my top gear on the highway. People with 2.73s are in their top gear on the highway too. Anyone with half a synapse in their head is going to be in their top gear on the highway as well. So being right does not always equate to giving good technical advice, which you have not done in this thread.

with 3.73's, you will have to be in 5th gear by about 60mph for DD and if your doing freeway and DD, thats just plain un-efficient

You do realize there's a 300 RPM difference between the two gears, right? And, as demonstrated by Rad Racer, you lose less than 1 MPG when comparing it to stock M5 gear ratios. When comparing the reduction of your 60' to the drop in your highway MPG, I'd say it's pretty efficient

**Blip55** · 10-22-2007, 08:43 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

your twisting my words again. what im saying is unless your going to run your car at a steady 4000 rpm. your going to HAVE to be in your top gear.

**Smoke Panther** · 10-22-2007, 10:14 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

4th gear at 4000 RPM is 74 MPH for me...so is 2800ish in my top gear. 4th gear at 4000 RPM with 3.23s would put me at 95 MPH, far beyond what anyone should be DDing on. So no, no one should be running their car at a "steady 4000 RPM" while DDing, regardless of the gear ratio.

**Blip55** · 10-22-2007, 10:17 PM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

uhh... i was talking about 3.73... not 3.23

but im done with this. i apologize for me being rude. no hard feelings dude

**speedyz** · 10-24-2007, 09:06 AM

Re: Ltd Slip Diff's: Zxl vs Etn vs Auburn

Originally posted by Blip55

your going to have to be at (originally i said 40mph) but now proven to be about 60.. in 5th gear.

Congratulations! You really are remarkable for realizing that at 60MPH, you should be in 5th gear!:banana:

Originally posted by Blip55

you lose, give it up. the main point about this whole argument has been proven. with 3.73's, you will have to be in 5th gear by about 60mph for DD and if your doing freeway and DD, thats just plain un-efficient

I have 3.23's and I have no idea why I would want to stay in 4th gear at 60 MPH

. You won't HAVE to be in 5th gear with 3.73's, or with 3.23's, or any other ratio, it would just make a lot more sense if you want your engine to last and you want decent mileage.

And no, Smoke Panther did not lose. Every comment you made was either estimated or made up. When corrected by Smoke Panther, whose input was backed by facts, you defended yourself poorly and just made yourself look stupid. So, you lose, Panther wins. But in all reality, who cares?:)

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