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09-08-2006, 11:29 AM
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#1
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New rear end?
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Registered User
Join Date: Jul 2003
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Could anyone suggest what rear end I should put in my 98 automatic.I would like to be able to still drive on the highway without using a whole tank of gas.:drive: thanks
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09-08-2006, 11:48 AM
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#2
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Re: New rea end?
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Teh TC6!
Join Date: Aug 2005
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Unless you plan on a lot of mods, the stock 7.5 should be fine, but if you do, go ahead and get the 8.8. Either one really.
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Click the sig for a complete list of mods and pics.
Bewst!? :chin:
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09-08-2006, 12:02 PM
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#3
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Re: New rea end?
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You want to **** me?
Join Date: Jun 2003
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State: Missouri
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I think she's asking for gear ratios...
Is it a v8 or v6? I say either 4.10s or 3.73w
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-Mike
[ 2003 Lexus IS300 || 2003 CBR600RR || 1986 Mustang GT ]
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09-08-2006, 12:22 PM
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#4
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Re: New rea end?
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Deranged
Join Date: Jan 2005
City: Largo
State: Florida
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3:73 for 5 speed 4:10 for auto
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Mods-MAc CAI , True Dual Flowmaster 40,3.73 ,T-Lok, 25% UDP, 3/8 Phenolic Intake Spacer ,Steeda Tri-ax, SCT Chip/Dyno Tune
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09-08-2006, 12:47 PM
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#5
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Re: New rea end?
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WTF^^...
Join Date: May 2003
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3.73's will raise your rpms a modest amount, If I recall right I went up 400rpms~ from my 2.73 gears to 3.73 gears. If your car is a v6 then you have 2.73 for sure. If you have an auto 3.73 or 4.10s are good. Expect 2-3 mpg loss on the highway and to pick up about 1mpg in the city (depending on driving habbits)
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09-08-2006, 06:02 PM
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#6
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Re: New rea end?
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Registered User
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Sorry for not being more specific. I'm going with an 8.8 I already have alot of mods on it. I'm just not sure if I should go with 3:55,3:73 or 4:10. 
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09-08-2006, 06:25 PM
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#7
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Re: New rea end?
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Registered User
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4.10's, or how about 4.30's. :burnout:
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09-08-2006, 06:31 PM
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#8
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Re: New rea end?
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Cammed Baby!
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What mods? That may make a difference
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09-08-2006, 06:32 PM
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#9
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Re: New rea end?
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Registered User
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WOW I was kinda wanting to avoid that. I was told that I should go with either 3:73 or 4:10.Does any1 have any idea why people suggest such large gears for automatics?
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09-08-2006, 06:42 PM
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#10
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Re: New rear end?
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Registered User
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You gear automatics lower than you do manuals because automatic transmissions are geared higher in Mustangs I believe.
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09-08-2006, 06:49 PM
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#11
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Re: New rear end?
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Registered User
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So far I have CAI,dual exhuast with Flowmasters, UDP, 56mm throttle body,p&p upper intake, 1.8 roller rockers,190 fuel pump and Superchip. But I'm going to get the SCT from vmptuning and 19 lbs injectors.
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09-08-2006, 07:36 PM
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#12
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Re: New rear end?
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Bob is Good.
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What kind of driving do you do? Mostly in the city or out on the highway?
If it's mostly highway driving, I'd get the 3.73s. If it's mostly stop and go, I'd get the 4.10s. The 4.10s may actually get better gas mileage than the 3.73s if you are constantly having to drive at 40 mph...
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09-08-2006, 07:52 PM
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#13
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Re: New rear end?
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I Like Jiblits
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I have a 97 automatic with 4.10's and a t-loc and I would not trade them for 3.73's. Def go with the 4.10's 
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09-08-2006, 07:56 PM
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#14
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Re: New rear end?
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I'd have to say it's 50% street 50% highway. =( Thanks for all the help
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09-09-2006, 02:02 AM
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#15
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Re: New rear end?
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You want to **** me?
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so do you have a v8 or v6? either way... get 4.10s with an auto. :yup:
Even on the highway, I got like 23mpg with my sixer on the highway with 4.10s
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-Mike
[ 2003 Lexus IS300 || 2003 CBR600RR || 1986 Mustang GT ]
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09-09-2006, 04:53 AM
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#16
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Re: New rear end?
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Registered User
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Its a V6. And getting 4:10's isn't harmfull to the car.
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09-09-2006, 09:08 AM
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#17
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Re: New rear end?
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I Like Jiblits
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I would assume it is a v6 because it has a 56mm throttle body (sorry didn't see your last post)
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09-09-2006, 09:16 AM
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#18
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Re: New rear end?
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Registered User
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__________________
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09-09-2006, 09:55 AM
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#19
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Re: New rear end?
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You want to **** me?
Join Date: Jun 2003
City: Kansas City
State: Missouri
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nah its not harmful to the car
__________________
-Mike
[ 2003 Lexus IS300 || 2003 CBR600RR || 1986 Mustang GT ]
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