Gears & Axles Driveshafts | Rearends | Differentials | Gears | 12 Bolt | 9 Inch | Dana
View Poll Results: What gears, if any, should I run?
3.73s
182
66.18%
4.10s
52
18.91%
4.56s
23
8.36%
Keep the stockers!
18
6.55%
Voters: 275. You may not vote on this poll

3.73, 4.10 or 4.56 in an A4 daily driver

Thread Tools
 
Search this Thread
 
Old 03-21-2006, 03:44 PM
  #1  
TECH Addict
Thread Starter
iTrader: (27)
 
SVT THIS's Avatar
 
Join Date: May 2005
Location: Owasso, Ok
Posts: 2,238
Likes: 0
Received 1 Like on 1 Post

Default 3.73, 4.10 or 4.56 in an A4 daily driver

I have a 98 A4 with 80xxx miles and a (new) stock 10 bolt. Mods on the car (will be) LT headers, lid, ls6 intake, MS3 cam and a 3500 stall. I drive the car everyday at least 40HW miles. What mpg should I expect with each gear? What will my RPMs be at 60mph with each? I'd really like your all's help in choosing these so I don't regret it down the road! Thanks!
Old 03-21-2006, 05:07 PM
  #2  
10 Second Club
iTrader: (7)
 
calongo_SS's Avatar
 
Join Date: Feb 2004
Location: Victoria, TX
Posts: 2,070
Likes: 0
Received 1 Like on 1 Post
Default

I voted stockers, assuming you have 3.23's. If you have 2.73's I'd get the 3.73's.
Old 03-21-2006, 10:12 PM
  #3  
Launching!
iTrader: (3)
 
LuvMyZ's Avatar
 
Join Date: Jan 2005
Location: Louisville, KY
Posts: 215
Likes: 0
Received 0 Likes on 0 Posts

Default

I have 3.73s in my DD with 130K on it (rebuit rear though). No problems. Avg between 19-21 on hwy. Good launches and easy on the street.
Old 03-21-2006, 11:14 PM
  #4  
11 Second Club
iTrader: (10)
 
2002BLKWS6's Avatar
 
Join Date: Mar 2005
Location: Atlanta
Posts: 308
Received 0 Likes on 0 Posts

Default

I agree with what calongo_ss said.
If your stock gears are 3.23's, I'd probably spend that money on modding something else. In a daily driver I think you'll be fine with 3.23's and your 3500 stall (which i'm assuming has a STR of at least 2.1). If you have 2.73's, you'll probably want to go to a different gearing. If thats the case, I'd probably go ahead and get the 3.73's.

As far as your MPH and what RPM you're at with each gear ratio, there used to be a link to a gearing chart somewhere out there, but I'm too lazy to search for it.

Since I saved that chart to my desktop, here are some figures from that chart for A4's, and an approx MPH at each RPM for each of those gearing ratios when in 4th gear

RPM 3.73 3.23
1700 50 57
1800 53 61
1900 56 64
2000 58 68
2100 61 71
2200 64 74
2300 67 78
2400 70 81
2500 73 84

I had the same delimma as you a recently, but I opted to keep my stock 3.23's in my daily driver mainly b/c I travel alot. That may change in the future, but for now its about whats more practical for me. It wasn't worth the time and money in my situation switching to 3.73's for a minimal gain at the track when I only go like twice a year.

But You gotta do whats best for you.
I'm sure you'll get some more good responses from folks, so Good Luck!!!!
Old 03-21-2006, 11:31 PM
  #5  
TECH Addict
Thread Starter
iTrader: (27)
 
SVT THIS's Avatar
 
Join Date: May 2005
Location: Owasso, Ok
Posts: 2,238
Likes: 0
Received 1 Like on 1 Post

Default

Is anybody running 4.10s or 4.56s with an A4? Would I be insane to run these gears on a daily driver?
Old 03-22-2006, 12:33 PM
  #6  
On The Tree
iTrader: (8)
 
Figz Z28's Avatar
 
Join Date: May 2005
Location: Harlingen,TX
Posts: 169
Likes: 0
Received 0 Likes on 0 Posts

Default

I guess Iam insane!!!!!!! NO Regrets!
Old 03-22-2006, 01:19 PM
  #7  
Racer
 
UL LOSE's Avatar
 
Join Date: Jun 2005
Location: Memphis,TN
Posts: 446
Likes: 0
Received 0 Likes on 0 Posts
Default

I ran 4.10s in my daily driver for about 2 years. No problems or regrets. MPG went up in city and down on highway. If you drive a lot on the highway,and have a loud exhaust, i wouldnt get them. They can get a little annoying in that situation. If youre getting a MS3 and 3500 Stall,and youre staying N/A. You NEED 4.10s. Youll get the most out of youre setup. Good Luck
Old 03-22-2006, 01:20 PM
  #8  
TECH Apprentice
iTrader: (18)
 
1fastz28nx's Avatar
 
Join Date: Aug 2005
Location: Southern Ohio
Posts: 308
Likes: 0
Received 0 Likes on 0 Posts
Default

3.73 is the way to go for a DD. I'm installing 4.11's within the next week or so but it's not a DD anymore.
Old 03-22-2006, 01:47 PM
  #9  
TECH Addict
iTrader: (3)
 
BlackHawk T/A's Avatar
 
Join Date: Nov 2005
Location: Lincoln, NE
Posts: 2,869
Likes: 0
Received 0 Likes on 0 Posts
Default

I may go with something in between. Maybe around a 3.55 if anyone makes that.

Last edited by BlackHawk T/A; 05-16-2006 at 05:56 PM.
Old 03-22-2006, 08:27 PM
  #10  
TECH Junkie
iTrader: (4)
 
s346k's Avatar
 
Join Date: May 2005
Location: johnson co.
Posts: 3,433
Likes: 0
Received 1 Like on 1 Post

Default

Originally Posted by UL LOSE
If youre getting a MS3 and 3500 Stall,and youre staying N/A. You NEED 4.10s. Youll get the most out of youre setup.
+1

with that stall/cam setup, that car will be a turd out of the hole with anything less than 410 gears.
Old 03-28-2006, 08:25 AM
  #11  
'Bird Director
iTrader: (80)
 
y2k_ta's Avatar
 
Join Date: Dec 2001
Location: Central Indiana Honors: 4th grade spelling bee contestant
Posts: 12,824
Received 24 Likes on 16 Posts

Default

I wouldn't go any larger than 3.73 with an A4 DD.

My 'bird turns 2200 RPM at 70 MPH and 2600 RPM at 75 MPH.
Old 03-28-2006, 09:24 AM
  #12  
Import Patrol
iTrader: (41)
 
CrawlinWS6's Avatar
 
Join Date: Jul 2005
Location: Brookfield, IL
Posts: 2,330
Likes: 0
Received 0 Likes on 0 Posts
Default

I was going to stay with my stock 3.23 but since I blew my 10-both, I went with 3.73 in my 12-bolt.
Old 03-28-2006, 10:16 AM
  #13  
Teching In
 
steven99WS6's Avatar
 
Join Date: Mar 2005
Location: Tomball TX right outside (north) of Houston TX
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default

I have a 99 WS6 with 3.73 gears in it and personally I would not go any bigger than that. I do about 2000rpm@60mph and 2200-2300rpm@70mph and 2600rpm@75mph. I drive about 35 miles a day at an average speed of 65-75 and I get 19mpg.
Old 05-11-2006, 02:49 PM
  #14  
TECH Addict
Thread Starter
iTrader: (27)
 
SVT THIS's Avatar
 
Join Date: May 2005
Location: Owasso, Ok
Posts: 2,238
Likes: 0
Received 1 Like on 1 Post

Default

Ya I think I'm going to go with 3.73s. They should do me fine until I get a 12 bolt, then I might try out 3.90s.
Old 05-12-2006, 02:48 PM
  #15  
11 Second Club
iTrader: (1)
 
Mooobunnny's Avatar
 
Join Date: Nov 2003
Location: Greensboro, NC
Posts: 301
Likes: 0
Received 1 Like on 1 Post
Default

I say 3.23's ....I regreted moving to 3.73's when my car was a stalled auto.
Old 05-12-2006, 02:59 PM
  #16  
LC
TECH Resident
 
LC's Avatar
 
Join Date: May 2005
Location: 8000DA Land
Posts: 983
Likes: 0
Received 0 Likes on 0 Posts

Default

4.10s are okay.. I was going to get 4.56s on my new 12 bolt, but there exist 4.30s, so i will get 4.30s

Daily Driving is such a personal tolerance thing...
Old 05-12-2006, 03:00 PM
  #17  
Banned
iTrader: (1)
 
Domestic Demon's Avatar
 
Join Date: Apr 2006
Location: NJ
Posts: 373
Likes: 0
Received 0 Likes on 0 Posts
Default

I voted 3.73. The are the best compromise between stock 3.23's and something like 4.10's, which are really too low for a daily driven auto.

I have 4.10's on my M6, but having 6 speeds with a .5 overdrive makes a big difference.
Old 05-12-2006, 03:19 PM
  #18  
TECH Junkie
iTrader: (4)
 
MrDude_1's Avatar
 
Join Date: Feb 2002
Location: Charleston, SC
Posts: 3,366
Likes: 0
Received 2 Likes on 2 Posts

Default

DD = 3.73
weekend car/ track car with 26" tires = 4.10s
strip car with 28" tires = 4.30s
Old 05-12-2006, 03:25 PM
  #19  
TECH Regular
iTrader: (4)
 
orion565's Avatar
 
Join Date: Jun 2005
Location: Houston, TX
Posts: 442
Likes: 0
Received 0 Likes on 0 Posts
Default

what about 3.42s??
Old 05-13-2006, 08:23 AM
  #20  
TECH Enthusiast
iTrader: (5)
 
THE LAST Z's Avatar
 
Join Date: Jul 2005
Location: Rain Island, NY
Posts: 626
Likes: 0
Received 0 Likes on 0 Posts

Default

Everybody's different.
You need to go to this site and play around with the numbers:

www.f-body.org/gears


Quick Reply: 3.73, 4.10 or 4.56 in an A4 daily driver



All times are GMT -5. The time now is 09:47 AM.