Detroit Locker - how much improvement?

saxmanJJ · January 9th, 2012, 12:41 PM

If I were to install a Detroit Locker, how much improvement would I see in my dragstrip launches? Right now I've got the stock differential in my 2004 Mustang GT. I've got a 5-speed and my best 60' ever was a 1.54.

Would/could I be quicker off the line, or just more consistent?

F8L GT · January 9th, 2012, 12:48 PM

more consistant and last longer due to the fact that the clutches wont be wearing out making your launches to start slipping

andrewskaggs · January 9th, 2012, 01:44 PM

Another option is a Detroit TrueTrac which also has no clutches. It's a little more streetable than a locker and is pretty sturdy.

number1gt · January 9th, 2012, 01:57 PM

I would like to know as well

GreyWarrior07 · January 9th, 2012, 02:00 PM

Is your car a drag strip only car? Cause locker on the street is a no no ( unless right tires/ conditions) I agree with Skaggs, i have the Detroit TruTrac and love it.

bigboy05 · January 9th, 2012, 02:44 PM

ill be getting a trutrac shortly

andrewskaggs · January 9th, 2012, 02:48 PM

Also...if you're going to replace the differential, you might as well upgrade to a 31-spline setup while you're in there. The only extra work is pressing the ABS ring off of your old axles and onto the new ones. Be careful with that. I don't know if it's as flimsy as it looks, but it makes me nervous when pressing it off. It flexes a ton.

number1gt · January 9th, 2012, 03:20 PM

who needs abs

just extra weight

andrewskaggs · January 9th, 2012, 03:28 PM

Originally Posted by number1gt

who needs abs just extra weight

I've thought about removing my power brakes and power steering, but I guess I'm still hanging onto the illusion that my car is a street car still. I put 500 miles on it last year.

number1gt · January 9th, 2012, 03:42 PM

Damn I thought I was bad for only putting about 2k on it lol, I wouldn't eliminate powersteering, but abs shouldn't effect everyday use

andrewskaggs · January 9th, 2012, 04:17 PM

Originally Posted by number1gt

Damn I thought I was bad for only putting about 2k on it lol, I wouldn't eliminate powersteering, but abs shouldn't effect everyday use

Well, I've found that racing it means there's always something to work on. Half the time it's either on jackstands or getting ready to get put back on the trailer. It's a pain in the butt to put the street tires back on just to drive it once or twice. Add in the fact that I don't drive it in the rain or cold and you have 500 miles. I'm thinking about pulling a F8L and not getting tags/insurance for it this year.

Anyway...sorry to threadjack, OP. Truetrac + 31 spline upgrade is my recommendation if you're going to do anything.

slow02gt · January 9th, 2012, 05:05 PM

elocker!!!!!!!!!!!! best thing

number1gt · January 9th, 2012, 05:10 PM

I don't drive mine in the rain or snow either lol but do enjoy some casual joy rides, although what your doing is cool lol

number1gt · January 9th, 2012, 05:13 PM

Originally Posted by slow02gt

elocker!!!!!!!!!!!! best thing

Do you have one?

F8L GT · January 9th, 2012, 07:12 PM

Originally Posted by GreyWarrior07

Is your car a drag strip only car? Cause locker on the street is a no no ( unless right tires/ conditions) I agree with Skaggs, i have the Detroit TruTrac and love it.

Detroit lockers are not that bad on the street, they are not a full locking diff like a spool. they are just noisey and ratchet. We put detroit lockers in ever car we build. Mine would have one too if it wasnt for the price

saxmanJJ · January 9th, 2012, 08:19 PM

When I find myself in a bracket race, it would be nice to know that I'm not going to spin at the line - basically launching the same everytime, and still be able to hammer it. I could leave the line easier, but when I try that, I sometimes bog the motor and really leave slow (like 1.80 60'), which sucks.

So there's no improvement to be found in the 60' with a locker, other than it would probably be more consistent?

saxmanJJ · January 9th, 2012, 08:20 PM

I want consistent 1.4x 60 foots dammit!

slow02gt · January 9th, 2012, 09:44 PM

Originally Posted by number1gt

Do you have one?

i got one going in my car now...drove my friends car with it and its the best of both worlds...when cruiseing on the street it is open..then say you go to the track hit the button and your ready to go...

Eaton Torque Control Products 19660-010 - Eaton Electronic ELocker Differentials - Overview - SummitRacing.com

mrbigjeep · January 9th, 2012, 11:38 PM

kinda like the air lockers in the jeep wranglers (rubicons)...open diff till you flip the switch and lock it up

thats pretty sweet, but quite a price tag

saxmanJJ · January 10th, 2012, 06:07 PM

to the top

gotta be some more guys here using the locker ...

January 9th, 2012, 12:41 PM	#1
saxmanJJ Hardcore Enthusiast 2004 Mustang GT 11.463@121.50 Join Date: Jun 2007 Location: SE PA Posts: 1,644 iTrader: 1 reviews	Detroit Locker - how much improvement? If I were to install a Detroit Locker, how much improvement would I see in my dragstrip launches? Right now I've got the stock differential in my 2004 Mustang GT. I've got a 5-speed and my best 60' ever was a 1.54. Would/could I be quicker off the line, or just more consistent? __________________ MM Bracket Racing Crew Member #5

January 9th, 2012, 12:48 PM	#2
F8L GT !FACEPLATED! 2002 Mustang GT 7.84 @ 86.01 Join Date: Jul 2008 Location: Upper Michigan Posts: 12,917 iTrader: 13 reviews	more consistant and last longer due to the fact that the clutches wont be wearing out making your launches to start slipping __________________ MM Bracket Racing Crew Co-Founder ~Its a Drag Car, Not a Show Car~ LINK-->Custom Race Transmission Build<--LINK

January 9th, 2012, 01:44 PM	#3
andrewskaggs Hardcore Enthusiast 2003 Mustang GT 8.26@83.06 (1/8) Join Date: Apr 2010 Location: Henderson, TN Posts: 1,104 iTrader: 4 reviews	Another option is a Detroit TrueTrac which also has no clutches. It's a little more streetable than a locker and is pretty sturdy. __________________ SLP :: SCT :: Eaton :: Maximum Motorsports :: Baseline Suspensions :: Strange Engineering MM Bracket Racing Crew BAMA Performance Drag Team #1 Project Thread :: YouTube Channel

January 9th, 2012, 01:57 PM	#4
number1gt Hardcore Enthusiast 2002 mustang gt Join Date: Jan 2010 Posts: 1,896 iTrader: 1 reviews	I would like to know as well __________________ Rock stock

January 9th, 2012, 02:00 PM	#5
GreyWarrior07 Hardcore Enthusiast 2001 Mustang GT 8.98 1/8 Join Date: Aug 2008 Location: North Branch, MN Posts: 1,475 iTrader: 0 reviews	Is your car a drag strip only car? Cause locker on the street is a no no ( unless right tires/ conditions) I agree with Skaggs, i have the Detroit TruTrac and love it. __________________ CHECK MEH GARAGE BAMA Performance Drag Team #9

January 9th, 2012, 02:44 PM	#6
bigboy05 Enthusiast 2003 mustang gt Join Date: Nov 2009 Location: Long Island Posts: 692 iTrader: 0 reviews	ill be getting a trutrac shortly __________________ 386/385 Kenne Bell powered 11.44@121.9 1.59 60 foot

January 9th, 2012, 02:48 PM	#7
andrewskaggs Hardcore Enthusiast 2003 Mustang GT 8.26@83.06 (1/8) Join Date: Apr 2010 Location: Henderson, TN Posts: 1,104 iTrader: 4 reviews	Also...if you're going to replace the differential, you might as well upgrade to a 31-spline setup while you're in there. The only extra work is pressing the ABS ring off of your old axles and onto the new ones. Be careful with that. I don't know if it's as flimsy as it looks, but it makes me nervous when pressing it off. It flexes a ton. __________________ SLP :: SCT :: Eaton :: Maximum Motorsports :: Baseline Suspensions :: Strange Engineering MM Bracket Racing Crew BAMA Performance Drag Team #1 Project Thread :: YouTube Channel

January 9th, 2012, 03:20 PM	#8
number1gt Hardcore Enthusiast 2002 mustang gt Join Date: Jan 2010 Posts: 1,896 iTrader: 1 reviews	who needs abs just extra weight __________________ Rock stock

January 9th, 2012, 03:42 PM	#10
number1gt Hardcore Enthusiast 2002 mustang gt Join Date: Jan 2010 Posts: 1,896 iTrader: 1 reviews	Damn I thought I was bad for only putting about 2k on it lol, I wouldn't eliminate powersteering, but abs shouldn't effect everyday use __________________ Rock stock

January 9th, 2012, 05:05 PM	#12
slow02gt Hardcore Enthusiast 2002 mustang gt 11.38@119 Join Date: Feb 2008 Location: beaumont, texas Posts: 2,835 iTrader: 1 reviews	elocker!!!!!!!!!!!! best thing __________________ built motor,trickflow heads,logan intake,80mm comp turbo on the way..

January 9th, 2012, 05:10 PM	#13
number1gt Hardcore Enthusiast 2002 mustang gt Join Date: Jan 2010 Posts: 1,896 iTrader: 1 reviews	I don't drive mine in the rain or snow either lol but do enjoy some casual joy rides, although what your doing is cool lol __________________ Rock stock

January 9th, 2012, 08:19 PM	#16
saxmanJJ Hardcore Enthusiast 2004 Mustang GT 11.463@121.50 Join Date: Jun 2007 Location: SE PA Posts: 1,644 iTrader: 1 reviews	When I find myself in a bracket race, it would be nice to know that I'm not going to spin at the line - basically launching the same everytime, and still be able to hammer it. I could leave the line easier, but when I try that, I sometimes bog the motor and really leave slow (like 1.80 60'), which sucks. So there's no improvement to be found in the 60' with a locker, other than it would probably be more consistent? __________________ MM Bracket Racing Crew Member #5

January 9th, 2012, 08:20 PM	#17
saxmanJJ Hardcore Enthusiast 2004 Mustang GT 11.463@121.50 Join Date: Jun 2007 Location: SE PA Posts: 1,644 iTrader: 1 reviews	I want consistent 1.4x 60 foots dammit! __________________ MM Bracket Racing Crew Member #5

January 9th, 2012, 11:38 PM	#19
mrbigjeep I Post Entirely Way Too Much 04 mustang gt 7.21 @ 98 Join Date: Apr 2008 Location: upstate sc Posts: 5,923 iTrader: 1 reviews	kinda like the air lockers in the jeep wranglers (rubicons)...open diff till you flip the switch and lock it up thats pretty sweet, but quite a price tag __________________ cams + 150 shot

January 10th, 2012, 06:07 PM	#20
saxmanJJ Hardcore Enthusiast 2004 Mustang GT 11.463@121.50 Join Date: Jun 2007 Location: SE PA Posts: 1,644 iTrader: 1 reviews	to the top gotta be some more guys here using the locker ... __________________ MM Bracket Racing Crew Member #5

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