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  • 1965 - 1973 Classic Mustangs -General/Talk-

what rear end do you use???

  • Thread starter Thread starter JT$$$
  • Start date Start date Feb 9, 2004
J

JT$$$

New Member
Feb 4, 2003
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Feb 9, 2004
#1
  • Feb 9, 2004
  • #1
what rear end do you use and what advantages does it give you??????????
 

StangDreamin'

Founding Member
Aug 10, 2002
583
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16
2nd Ocotillo bush east of the Colorado River; Sout
Feb 9, 2004
#2
  • Feb 9, 2004
  • #2
JT$$$ said:
what rear end do you use and what advantages does it give you??????????
Click to expand...


This not being the Tech Section, I'm tempted to reply: "The one I was born with, and it keeps me from being full of...." but that's probably not your intent.

My present rides have:

1.)A GM corp 10-bolt (3.00:1) in the Rice-Eating Generic Chevy Truck. I'm thoroughly surprised it has lasted 138k miles the way I beat on it EDIT: Pro: It means GREAT gas mileage when running empty on flat ground. CON: When pulling a loaded horse trailer, you clock your 1/4's with a CALENDAR, and the mileage goes in the toilet because you rarely make it to 5th gear
2.) A Dana 60 (3.55) in the Ram Quad Cab 1500. I'm amazed Dodge put something that HD in a 1/2-ton. CON: What can I say.... it's a Dodge - go buy stock in several refineries!

Past rides had:

NINE INCHER's
1.) 3.00:1 Limited-slip in the Torino (wish it had been much lower to let the Cleveland stretch her legs!)
2.) 3.56:1 Trac-Loc in the F100... with the built FE trying to swallow a Holley 4150 - whole, it would pass everything but a gas station. (But it could probably pull that gas station behind it down the road without too much sweat)




Still Dreamin'
 

SadbutTrue

Founding Member
May 1, 2002
2,390
4
49
Granada Hills, California
Feb 9, 2004
#3
  • Feb 9, 2004
  • #3
8" 2.79 open

Advantages:
None, unless you love 25 foot pegleg burnouts at one third throttle from a standstill
Good gas mileage, I guess (i drive it floored whenever i drive it though, so this doesnt' help too much)

Cons:
Doesn't get traction
Doesn't accelerate/rev because the gearing is too numerically low
Won't stand up to engines I plan on building, in all likely hood
 

HistoricMustang

Active Member
Apr 11, 2003
2,359
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46
Confederate States of America
Feb 17, 2004
#4
  • Feb 17, 2004
  • #4
3.25 to 3.50 best for street use. Mine is a 3.89 but it is not for street use and yes it is a Detroit Locker!

HistoricMustang
www.historicmustang.com
 

none67

New Member
Oct 19, 2003
352
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0
Feb 17, 2004
#5
  • Feb 17, 2004
  • #5
HM.. you say locker.. do you mean limited-slip, because in the style of racing you are in to you do turn a lot.. does the locker hurt it much?
 

golf4283

Active Member
May 30, 2003
1,253
1
39
Orland Park, Illinois
Feb 17, 2004
#6
  • Feb 17, 2004
  • #6
I will be using an 8.8 incher with 3.73's and a POSI when I finally get home from school and get it in there. its gonna be great.
 

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Feb 17, 2004
#7
  • Feb 17, 2004
  • #7
none67 said:
HM.. you say locker.. do you mean limited-slip, because in the style of racing you are in to you do turn a lot.. does the locker hurt it much?
Click to expand...

Nope....

The locker is better for both drag and road racing... You'll burn up the limited slip!

The locker is free for approx 180 degrees as well. Instead of the clutches coming together on a limited slip, you get gear engaging on a locker. Way better and way more durable.
 

dodgestang

Active Member
Dec 15, 2003
1,360
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37
Cecil County, MD
Feb 17, 2004
#8
  • Feb 17, 2004
  • #8
JT$$$ said:
what rear end do you use and what advantages does it give you??????????
Click to expand...

57 Ford 9 inch with 4.11 trak lock 4 spyder 28 spine

Advantages:
Bolted right into my 65FB
SSBC small bearing brakes bolt right up
4.11 in combo with my 2.85 first get me out fast and out of first faster
4 spyder holds power to the ground decent for my stroker in a street car
28 spline cause it was cheaper than buying new 31 spline axles

Disadvantages.
As soon as I put slicks on the car it will break
4.11 is a large gear, if I did not have OD in the car it would be terrible on the highway
57 housing although a 9 inch housing, is prob the weakest housing available that bolts into the car...but for $150 including the axles....I will use it till it breaks and then buy a new one.
 

6Stang7

New Member
Jun 1, 2003
1,470
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0
Livermore, CA
Feb 18, 2004
#9
  • Feb 18, 2004
  • #9
8" with 4.11's and just like HistoricMustang, a Detroit Locker!!! Advantages? Twice the traction, or twice the tire smoke. It's a win/win situation here!!!
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
2,468
86
99
Western Mass
Feb 19, 2004
#10
  • Feb 19, 2004
  • #10
Mine has a 3.20:1
 

Edbert

Founding Member
Jul 13, 2002
3,548
32
109
Austin TX
Feb 19, 2004
#11
  • Feb 19, 2004
  • #11
1967 9" with 3.70:1 Motorsport r&p and a Tru-Trac Lock-Right 31 spline locker. I still need to buy axles though to replace my 28s.
 

LMan

Founding Member
Aug 10, 2002
1,246
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0
Mom's basement
Feb 19, 2004
#12
  • Feb 19, 2004
  • #12
3.55 in a 8"
 

mdjay

Premium Sponsor
Dec 9, 2003
896
0
16
Las Vegas, NV
Feb 19, 2004
#13
  • Feb 19, 2004
  • #13
Anything over 350-400 horse, go to a 9" with a locker...
 

bud4660

Founding Member
Apr 14, 2002
459
0
0
Mesquite, Tx
Feb 19, 2004
#14
  • Feb 19, 2004
  • #14
9"...4:56 richmond gears, mark williams 31 spline axles and a strange spool.
 

C.Harris

Da Boss
Founding Member
Dec 20, 1998
1,850
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0
Feb 20, 2004
#15
  • Feb 20, 2004
  • #15
'bout the same here....4.57 geared 9" rear with mini-spool
 
J

jesserose17

New Member
Aug 21, 2003
219
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0
Southern CA
Feb 24, 2004
#16
  • Feb 24, 2004
  • #16
'68 - 3.00 in open 9" - not much of advantage... wishing for 3.55 and trac-loc

'94 GT conv - 2.73 in open 8.8 - 24 mpg on highway...

'00 Pontiac Grand Prix - 3.89 (factory, no kidding) - great acceleration even with 200hp pushrod 3.8L V-6 and still gets upper 20's gas mileage with overdrive.
 
M

Mustang67Coupe

New Member
Feb 20, 2004
64
0
0
Salem, Or
Feb 24, 2004
#17
  • Feb 24, 2004
  • #17
9" detroit locker with 4.33 richmond's, 31 spline axles

Disadvantages: Havent been able to use it while im restoring.
 
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