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Garry
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Post subject: rear end gears?  Posted: Wed Feb 13, 2008 8:20 pm |
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Joined: Sat May 26, 2001 9:59 pm
Posts: 7823
Location: Bad Hersfeld, Germany
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I was wondering if I should put different ratio gears in my rear end ... stock is 3.42, 4.10 would hurt top speed & economy quite a bit, so 3.73 might be a good compromise ...
Any comments?
_________________
Garry Glendown * '99 Firehawk Convertible
"Horsepower is how fast you hit the wall and torque is how far you take the wall with you."
"Speed doesn't kill - suddenly becoming stationary on the other hand ..."
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98blkbrd
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Post subject: Re: rear end gears? Posted: Wed Feb 13, 2008 11:25 pm |
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Joined: Sun Jun 24, 2007 1:44 pm
Posts: 84
Location: Ramstein AB, Germany
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garry on a M6 all that I have ever read leads me to believe that 3:73's are a great choice
So far I would take back my stock 3:23's in my A4... Im hurting all through the RPM band and driveablity sucks...then again it could be caus emy tranny is acting up
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98 T/A, A4, T-Top, Black w/ slvr accent
FTRA, Whisper Lid, 160stat, SpeedInc. Dyno Tune, Moser 12blt 3.73's
BMR--STB, Torque Arm, SFC, LCA, Adj. PHB.
ZO6 SLVR 17X9.5 on all4, Kuhmo, Koni sngl adj., Eibach 1.5drop, PowerSlot Rotors,Hawkpads
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mcgarnicle
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Post subject: Re: rear end gears? Posted: Sun Apr 20, 2008 10:22 pm |
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| Fast Newbie |
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Joined: Wed Dec 12, 2007 4:02 am
Posts: 60
Location: erlangen
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I got 4.11's in my 89 with a M29 T56 and I can cruise at a 100mph at 2500 RPM. It's still good around town also the only thing that is no good is I still have the TPI so I go through my power band pretty fast lol.
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1989 IROC Z28 350 TPI, T56 out of 95Z, 98 TA rear 4.11's.
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a10beav
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Post subject: Re: rear end gears? Posted: Mon Apr 21, 2008 2:36 pm |
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Joined: Fri Mar 02, 2007 2:29 am
Posts: 496
Location: Ramstein
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I have 3.50's in my '88 with a 6 speed, it accelerates pretty quick and I still get good fuel economy out of it. I wouldn't go above 3.73's, but I keep hearing about gear "whine" with that ratio.
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Johnny
1988 LS2 Firebird
1999 Formula Firehawk (stateside storage)
2007 Z4 M-Coupe
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Chevroletfreak
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Post subject: Re: rear end gears? Posted: Thu Apr 24, 2008 12:49 am |
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| No Life |
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Joined: Sat Mar 04, 2006 7:03 pm
Posts: 1007
Location: Oklahoma, USA
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4.56's will give you a kick......yeah, you'll lose gas mileage, but with mine I can still bury the 150 speedo!
It really is a balancing act and will depend on what you want. I had 3.23's in my 93 6spd. Truthfully, I didn't notice any increase in gas mileage, but I am dam sure it would hit between 180-190 MPH on the bahn.
I would recommend either a 3.73 or 4.10. Since you are buying gas on the local economy I would lean toward the 3.73's
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My name is Brian and I have a SSickneSS
Black 01 6spd SS # 5971 - AFR, FAST, Nick Williams, SLP, Kooks, Borla, Kirban, Spec, Moser, BMR, Spohn
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SRZ
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Post subject: Re: rear end gears? Posted: Thu Apr 24, 2008 4:02 pm |
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Joined: Sun May 27, 2001 3:42 pm
Posts: 3430
Location: FL
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3.73's in mine and quiet as all get out. She wraps up too quickly for me now and feels like Brian's 4.56's.  3.55's will go in when I get back stateside in 2 mos.
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The "SRZ"
750rwhp, limited to 55mph flyby's in the US.
02' MY Z06, Cam, LT headers, X-pipe, Breathless CAI, Borla Stinger exh, RSD short shifter, Elite catch can, C6Z susp, CCW classic's 18x10 & 18x12...your normal everyday Z06.
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