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Thread: 3.73 Gears
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01-07-2008, 11:49 PM #1
3.73 Gears
How much of a difference will I see & feel with 3.73 compaired to stock?
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01-08-2008, 12:54 AM #2
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- May 2007
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- Seattle
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Jetstream Blue Metallic- 2008 Z06 Corvette
Do you have an A4 or M6?
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01-08-2008, 02:12 AM #3
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- Nov 2006
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- Charleston, SC, but originally from Gainesville, FL
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SILVER- 2002 Z28
If you have an A4, do you have the 2:73 and 3:23 setup?
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01-08-2008, 07:11 AM #4
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- Feb 2007
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- San Diego, CA
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- 5,823
2002 Z28 A4 NBM- Sadly now demodded :(
You go from 2.73 to 3.73 you'll see a big difference.
FYI: If you're stock then steel driveshaft = 2.73's; aluminum = 3.23's. Or look at the door sticker option list: GU2 = 2.73's & GU4 = 3.23's.
If you have 2.73's you'll need a 3 series posi.
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01-08-2008, 07:13 AM #5
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- Dec 2006
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- Pensacola
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- 35
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Red- 2001 Camaro SS A4
what about going from 3.42's to 3.73's...
sorry to whore your thread man
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01-08-2008, 10:54 AM #6
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01-08-2008, 11:08 AM #7
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Pewter- 1999 Trans Am 5.7L
With the 6speed, I would go with 4.10's at least. I made the mistake of going from 3.42's to 3.73's and felt a little more pull, but not much.
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01-08-2008, 11:17 AM #8
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- Oct 2007
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- Muncie, IN
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00 TA PWTR, 98 VertTA NBM- 80 TA BLK, 80 Formula NBM
This really true!?. . i've been wondering what gears my ta had because it doesn't have the sticker anymore. and hadn't got around to taken the cover off yet.
good to know i have 3.23's!
I think you will notice a difference between 3.73's and stock. IMO, 3.73's or close to is about the perfect running gear for a dd or summer A4 fbody. 4.10's are bad ass though.Last edited by GULLETT17; 01-09-2008 at 04:22 AM. Reason: misspell
2000 TA, A4, LS6 intake, Magnaflow, WS9 hood, BMR STB, UMI boxed SFC, Spohn LCA, 9" Ford
1998 TA Vert, NBM, M6, Flowmaster, WS6 hood, WS6 airbox, C6 wheels, UMI SFC, BMR STB
1998 Bird, Black, V6, A4, 18" 077's, Wings West Body Kit
1980 Formula, NBM, 402BB, cam, DR timing, LT headers, 3" TD w/ flowmasters, TH350
1980 TA, Black, 301, bone stock
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01-08-2008, 04:05 PM #9
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01-09-2008, 01:11 PM #10
The only code I see on the door says GU5 is this correct? I can't find any other code on the door that says GU4 or GU2.
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01-09-2008, 01:17 PM #11
yea its GU5 is the code for the 3.23's GU6 is the code for the 3.42's in the 6 speed cars.
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01-09-2008, 02:36 PM #12
So it's GU5 not GU4
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01-09-2008, 08:36 PM #13
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01-09-2008, 10:00 PM #142000 Arctic White trans am, ws6 hood, ws6 air box, slp lid, slp smooth bellows, slp loudmouth exhaust,shift kit, rebuilt trans, LS6 intake, 3.73 gears, Shaner S3 p/p throttle body, and a tune . SFC. C6 ZO6 rims 18" in back 17" in front. Drilled and slotted rotors.
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01-10-2008, 03:33 PM #15
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- St. Marys County,MD
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Red- 2002 35th LE SS
I just look at my door tag, Gu5. So I have 3.23. How big of difference would be going from 3.23 to 3.73 or even 4.10s. Would it be to harsh to dd.
Matt
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01-10-2008, 04:34 PM #16
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01-10-2008, 04:48 PM #17
- Join Date
- Dec 2007
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- St. Marys County,MD
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- 34
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Red- 2002 35th LE SS
^^^
OK cool,thanks. Since I have auto I'll go with 3:73s.Is it a big noticeable difference going from 3:23 to 3:73.
MattLast edited by MATTREDSS; 01-10-2008 at 05:13 PM.
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01-10-2008, 06:04 PM #18
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01-12-2008, 07:34 AM #19
2 big reasons most autos go 3.73's is either they are scared they will suffer gas mileage wise, which with just that is minimal at best and almost no noticable difference from a 3.73 and that in the 1/4 with stock rev limiters you might have to shift into OD crossing the traps. I have 4.11's and haven't noticed a huge decrease in gas mileage over the stock 2.73's. And i did mostly highway. went from like 10$ a day to like 13$ for the same drive and given that is spread out on a 100 mile trip that is still better than 20 mpg and that is with my cam (MS3)and stall (3600). Huge difference with gears alone, much more fun. I say get the 4.10's even if you're an auto. That's a 6 speeds biggest advantage I think anyway is the gearing.
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01-12-2008, 05:59 PM #20
I ran 4.10's on a LT1 Caprice, and would do it again in a second! With the overdrive transmission, not too bad on the street as long as you aren't cruising for hours at 90 MPH- the feeling leaving every light and stop sign is just mind-bending! Wheelspin whenever you want, just mash the gas.
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