boost & Gears

02sonicGT · July 14th, 2009, 10:19 PM

My ultimate plan is to go with a KB but that is a few years down the road. In the meantime I would like to changeout the gears.

Considering the torque of the KB throughout the rpm range i'm afraid that the 4.10's will result in a tire shreading experience even with 315's. centri's can probably get away with it due to a bit of lag (i understand lag 100% from my past life with the imports and my eclipse). I'm not interested in the car skating all over the road like trying to force an elephant to sprint on a frozen lake

What I am interested in is feedback from all boosted owners of all types and if I should go with the 3.73 or 4.10's keeping in mind that it will definately be a number of years before I get the blower and more then likely I will go with a screw type as it is nothing but fun on the street.

Thanks!

WLJohnson05 · July 14th, 2009, 10:20 PM

3.73

NO_PI_NO_POWER · July 20th, 2009, 02:45 AM

I replaced my 4.10's with 3.73's before I got my kb. Both were great and fun on the motor, but I would say 3.73's.

Blown2000GT · July 20th, 2009, 11:28 AM

3.73's FTW with any street tire your gonna spin your ass off lol...

NO_PI_NO_POWER · July 21st, 2009, 07:33 AM

Yeah, 245/45/17's are awesome with boost!

02sonicGT · July 25th, 2009, 10:04 PM

looks like I just got an excuse to do the gears. leak on my rear diff from what looks to be the pinion seal. spoke with Eric at Swarr auto and he will install the 3.73 FRPP parts and labor for $495 with an additional $125 for his master bearing kit.

the leak gave me the leverage I needed with the wife and getting the parts in lol.

sound like either my TOB or pilot bearing is going out to. in neutral with the clutch out I can hear an obvious bearing whirl. Going with the ram HDX setup. Car has 83k on the stock clutch so it is about time.

Thanks for the feedback fellas!

cyberdude47 · January 10th, 2010, 09:21 PM

I did 3:73's with plans for a twin screw which is just going on now

uedlose · January 14th, 2010, 08:26 PM

A guy who's car I put a charger on is a centrifugal with27560/15 street tires with a auto and a 4000 stall has 4.10 it is just plain sick on street tires it is a real hand full even with the ET/ streets when the boost would come you had better have hold of it due to it lighting the tires when it wanted to. he is gone to back up to 3.73 in the near future but this a fox body that a few # lighter. we have the same size tires on our coupe and only run 3.31 rear gears and with real street tires you just don't get on it at all it will fry the tires off it at will when the boost hits even at well over 50mph. Now with the DR on it is much better but it is the same as the other car you better be waiting on it to change lanes cuz you just don't knowwhen it is gone to brake the tires lose. With a KB and 410 and instant torque I would gowiththe 3.73 or even back don't to a 3.55. But I know auto hit a bit harder then sticks with the engine rushing up the power band with the lose converters.

8URSRT · January 16th, 2010, 07:24 PM

I am running 4.10's with a blower, the car is an absolute blast down low. I went from 3.27's to the 4.10's and it was like night and day.

I also had to swap from a 26 inch slick to a 28 inch slick. I was running out of gear on the 26's.

If having the possibility of having to change to a 28 inch tall tire worrys you, I would have to suggest 3.73's or 3.90's.

02sonicGT · January 23rd, 2010, 09:10 PM

I ended up going with the 3.73's and i love them. really woke up the car. I do appreciate all the great feedback!

saidgrc · March 27th, 2010, 04:02 AM

If your boosting you should gt 4.10, if not 3.73's are great. i have 3.73's and they are awesome.

tboz65 · March 30th, 2010, 02:46 PM

4.10's are too steep with my Procharger, although the car was setup for nitrous before, when the gears were installed. Personally I think I'd rather have 3.55's now and just run a 26"-27" tire.

mustangbrad94gt · May 17th, 2010, 05:46 AM

I run 3:55 with turbo, had 4:10 in first, cars faster with 3.55, would like to try 3:27 just to see, turbo's dont like deep gear

July 14th, 2009, 10:19 PM	#1
02sonicGT Regular 2002 Mustang GT Join Date: May 2008 Location: Bethlehem, PA Posts: 281 iTrader: 0 reviews	boost & Gears My ultimate plan is to go with a KB but that is a few years down the road. In the meantime I would like to changeout the gears. Considering the torque of the KB throughout the rpm range i'm afraid that the 4.10's will result in a tire shreading experience even with 315's. centri's can probably get away with it due to a bit of lag (i understand lag 100% from my past life with the imports and my eclipse). I'm not interested in the car skating all over the road like trying to force an elephant to sprint on a frozen lake What I am interested in is feedback from all boosted owners of all types and if I should go with the 3.73 or 4.10's keeping in mind that it will definately be a number of years before I get the blower and more then likely I will go with a screw type as it is nothing but fun on the street. Thanks! __________________ 2002 Sonic Blue GT : Manual, FRPP 3.73's, Ram HDX Clutch, Pypes Violator Cat-Back, Pypes catted X-Pipe, Mach1 Chin, SCT Livewire, PLX SM-AFR as Analog input to LW

July 14th, 2009, 10:20 PM	#2
WLJohnson05 MM's Database Error 2004 Mustang V6 322.8 rwhp Join Date: Mar 2007 Location: VA Posts: 13,106 iTrader: 8 reviews	3.73 __________________ I'm trying to get rid of this stuff, feel free to make me an offer!: Kenwood Head Unit $155 SCT Mass Air Flow Sensor $200 Tial Wastegate Springs $40 (10psi and 3.6psi)

July 20th, 2009, 02:45 AM	#3
NO_PI_NO_POWER Enthusiast 1997 Mustang GT 12.501@116.35 Join Date: Jul 2008 Location: Greeley, CO Posts: 655 iTrader: 0 reviews	I replaced my 4.10's with 3.73's before I got my kb. Both were great and fun on the motor, but I would say 3.73's. __________________ 1997 GT 1989 LX ~Dangerously Quick/Needs Battery

July 20th, 2009, 11:28 AM	#4
Blown2000GT Regular 2000 Mustang GT Join Date: Jul 2009 Location: Maryland Posts: 108 iTrader: 0 reviews	3.73's FTW with any street tire your gonna spin your ass off lol... __________________ Check out my garage... 2000 Crystal White GT Vert 1996 Black GT Coupe-SOLD

July 21st, 2009, 07:33 AM	#5
NO_PI_NO_POWER Enthusiast 1997 Mustang GT 12.501@116.35 Join Date: Jul 2008 Location: Greeley, CO Posts: 655 iTrader: 0 reviews	Yeah, 245/45/17's are awesome with boost! __________________ 1997 GT 1989 LX ~Dangerously Quick/Needs Battery

July 25th, 2009, 10:04 PM	#6
02sonicGT Regular 2002 Mustang GT Join Date: May 2008 Location: Bethlehem, PA Posts: 281 iTrader: 0 reviews	looks like I just got an excuse to do the gears. leak on my rear diff from what looks to be the pinion seal. spoke with Eric at Swarr auto and he will install the 3.73 FRPP parts and labor for $495 with an additional $125 for his master bearing kit. the leak gave me the leverage I needed with the wife and getting the parts in lol. sound like either my TOB or pilot bearing is going out to. in neutral with the clutch out I can hear an obvious bearing whirl. Going with the ram HDX setup. Car has 83k on the stock clutch so it is about time. Thanks for the feedback fellas! __________________ 2002 Sonic Blue GT : Manual, FRPP 3.73's, Ram HDX Clutch, Pypes Violator Cat-Back, Pypes catted X-Pipe, Mach1 Chin, SCT Livewire, PLX SM-AFR as Analog input to LW

January 10th, 2010, 09:21 PM	#7
cyberdude47 Regular Join Date: Mar 2008 Posts: 162 iTrader: 1 reviews	I did 3:73's with plans for a twin screw which is just going on now __________________ Cervini Stalker kit, Foose 18" Nitrous 265/295 Manley rods & pistons, Kellogg crank, ATI 10%OD, Fidenza flywheel, Spec3 clutch. Kenne Bell 2.2L,8rib conversion. Headers, Xpipe, Magnaflows JLT, SCT Eibach, H&R, Tokico, Maximum motorsports

January 14th, 2010, 08:26 PM	#8
uedlose Regular 89 Mustang Join Date: Oct 2008 Location: Middle Way WV Posts: 180 iTrader: 0 reviews	A guy who's car I put a charger on is a centrifugal with27560/15 street tires with a auto and a 4000 stall has 4.10 it is just plain sick on street tires it is a real hand full even with the ET/ streets when the boost would come you had better have hold of it due to it lighting the tires when it wanted to. he is gone to back up to 3.73 in the near future but this a fox body that a few # lighter. we have the same size tires on our coupe and only run 3.31 rear gears and with real street tires you just don't get on it at all it will fry the tires off it at will when the boost hits even at well over 50mph. Now with the DR on it is much better but it is the same as the other car you better be waiting on it to change lanes cuz you just don't knowwhen it is gone to brake the tires lose. With a KB and 410 and instant torque I would gowiththe 3.73 or even back don't to a 3.55. But I know auto hit a bit harder then sticks with the engine rushing up the power band with the lose converters. __________________ Just another turbo Mustang..No dyno numbers just good ets and MPH. And yes it is fast for a street car. few parts for sale https://docs.google.com/document/d/1...l=en_US&pli=1#

January 16th, 2010, 07:24 PM	#9
8URSRT Newbie 1989 Coupe 11.49@124 Join Date: Jan 2010 Location: MO Posts: 47 iTrader: 0 reviews	I am running 4.10's with a blower, the car is an absolute blast down low. I went from 3.27's to the 4.10's and it was like night and day. I also had to swap from a 26 inch slick to a 28 inch slick. I was running out of gear on the 26's. If having the possibility of having to change to a 28 inch tall tire worrys you, I would have to suggest 3.73's or 3.90's. __________________

January 23rd, 2010, 09:10 PM	#10
02sonicGT Regular 2002 Mustang GT Join Date: May 2008 Location: Bethlehem, PA Posts: 281 iTrader: 0 reviews	I ended up going with the 3.73's and i love them. really woke up the car. I do appreciate all the great feedback! __________________ 2002 Sonic Blue GT : Manual, FRPP 3.73's, Ram HDX Clutch, Pypes Violator Cat-Back, Pypes catted X-Pipe, Mach1 Chin, SCT Livewire, PLX SM-AFR as Analog input to LW

March 27th, 2010, 04:02 AM	#11
saidgrc Newbie 2002 Mustang GT Join Date: Mar 2010 Location: Miami, FL Posts: 18 iTrader: 0 reviews	If your boosting you should gt 4.10, if not 3.73's are great. i have 3.73's and they are awesome.

March 30th, 2010, 02:46 PM	#12
tboz65 Regular 2001 GT, 1965 coupe Join Date: Mar 2010 Location: Troy IL Posts: 115 iTrader: 0 reviews	4.10's are too steep with my Procharger, although the car was setup for nitrous before, when the gears were installed. Personally I think I'd rather have 3.55's now and just run a 26"-27" tire.

May 17th, 2010, 05:46 AM	#13
mustangbrad94gt Newbie Join Date: May 2010 Posts: 43 iTrader: 0 reviews	I run 3:55 with turbo, had 4:10 in first, cars faster with 3.55, would like to try 3:27 just to see, turbo's dont like deep gear

Remove Advertisements Sponsored Links
Forums at Modded Mustangs Advertisement Advertisement

Threads Similar to: boost & Gears
Thread	Thread Starter	Forum	Replies	Last Post
Cams & Gears...	joeice14	2005 - 2010	20	March 25th, 2009 04:16 PM
Gears & superchargers	saleen73	99-04	12	June 17th, 2008 01:16 AM
Compound Boost, Baby. TT & SC, 1100 RWHP	TheUNZippee!	The Clubhouse	25	December 20th, 2007 10:31 PM
Gears & LSD????	mustang_marine	99-04	8	August 19th, 2007 01:14 PM
Gears & LSD????	mustang_marine	5.0 Mustangs	2	August 19th, 2007 01:07 PM

All times are GMT -4. The time now is 03:14 AM.
Contact Us - Modded Mustangs - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.