8.8' Rear end vs. 9" rear end

jhooper · December 17th, 2006, 06:46 PM

I'm looking to change out my 8" rear end in the next couple of months. I've heard that the Ford 9" rear end is one of the most durable rear ends ever made. I'm looking to run a 3.73 gear, and wanted to know if there was any benefit to going to an 8.8" rear end......beside the fact that they are more plentiful.

Also, are there any modifications needed if I swapped my 8" for either the 9" or the 8.8" rear end.

Thanks,

Jeff

1slo5.0 · December 18th, 2006, 04:10 AM

Why do you want to get rid of the 8"? I wouldn't change it unless you are making alot of horsepower. I know first hand those 8" rear ends will handle a good amount of power in stock form. Are you sure its an 8"? They are very similar to a 9" too with a drop out center section.

Horseshoeing · December 18th, 2006, 07:30 AM

You can get a bolt on 9" for about $600 at the junkyard. A 9" is easy to swap gears. If yo want a 9", get a a lincoln Versailles rearend. I am guess it will fit you car not knowing what it is.

chevy_killer · December 18th, 2006, 10:22 PM

just go to http://currieenterprises.com/ and check these rear ends out

69fastback · December 20th, 2006, 12:20 AM

Doesn't the 8" rear end swap gears just like the 9"?

1slo5.0 · December 20th, 2006, 02:11 PM

Originally Posted by 69fastback

Doesn't the 8" rear end swap gears just like the 9"?

Yes

latamud · February 24th, 2007, 03:58 PM

Versailles rear ends are nice if you can find them, 9" with disc brakes. I picked mine up in the salvage yard for $125 ready to bolt in. It came with a Trac Loc too! 67-70 Mustang rear ends are all interchangeable. If you happen to have any of those years its worth knowing. 65-73 Bronco rear ends are the same width as a versailles rear but take more to get bolted under a Mustang.

homeboy2kfun · August 13th, 2008, 03:29 AM

Dos anyone know what axles are interchangeable with the 2001 mustangs or better what cars use the 8.8 or 9 axle that would fit the 2001

MustangOne · August 13th, 2008, 09:58 AM

Originally Posted by homeboy2kfun

Dos anyone know what axles are interchangeable with the 2001 mustangs or better what cars use the 8.8 or 9 axle that would fit the 2001

You might want to ask in this forum

99-04 Forum

460brevill · August 13th, 2008, 10:55 AM

the 8 inch and the 9 inch lool alike.both will take a lot of punisment.if you are not punching 600 hp,leave the 8 in there and build it.

aintsheperty66 · August 17th, 2008, 01:56 PM

The 8 inch is a decent rear-end. But there's no breaking a Ford 9 inch. If you do, I'll buy you a new one. Lol.

Lankolf · October 20th, 2008, 03:23 PM

I saw a nine inch broke once, it was shattered in the back. It was a 65 fastback with what I was told original 289 dbl 4 barrel carbs on racing slicks.

speedfreak · October 20th, 2008, 03:26 PM

Originally Posted by 69fastback

Doesn't the 8" rear end swap gears just like the 9"?

Yes both rear ends have pumpkins that can be switched out. It is a beautiful thing for race day.

speedfreak · October 20th, 2008, 03:29 PM

The 9 inch is one of the best rear ends ever made. It is the basis for most racing rear ends used today. If you get one for your car it will bolt right in without any modifications for the most part. As long as you get a basic one for your car there are no mods.

Israel · March 25th, 2011, 02:38 PM

Waay old, but how does the cost and availability of the 8" compare to the 9"?

I imagine 9" are getting hard to get cheap in the yards.

MustangOne · March 25th, 2011, 03:05 PM

Why didn't you just make new thread to ask that?

Old Mustang 8" are a lot more plentiful that a old Mustang 9"

The 8" came in everything with a 289 or 302 in it. Witch most of all of them had.

The 9" came in only high performance Mustangs with 351 or bigger.

8" not rebuilt is $250, 9" not rebuilt is $350 to $450 when you can find them.

you can find 9" in trucks and bigger old 70's cars but they are about 2" wider.

Israel · March 25th, 2011, 03:57 PM

Originally Posted by 460brevill

the 8 inch and the 9 inch lool alike.both will take a lot of punisment.if you are not punching 600 hp,leave the 8 in there and build it.

600 is a lot, is this a good figure?

Triton · March 26th, 2011, 11:56 AM

I have a 9" from a Lincoln in my mustang, I did it for the disc brakes and the posi rear end. If I had to do it over again I would stick to the 8" because on a light car like the Mustang if your not pushing out a lot of hp it seems to be too much un-sprung weight and the car does not handle as nimble

MustangOne · March 26th, 2011, 01:40 PM

Originally Posted by Israel

600 is a lot, is this a good figure?

??? 600 for what? HP, Cost?

8", 9", Rebuilt? Not rebuilt?

Is the question will a 8" hold 600 HP? Built yes. Without Drag slicks.

A 9" is a Lot better though.

Israel · April 24th, 2011, 11:41 PM

What years did the late models use an 8.8 rear, or are they still using them, and what are they rated for in HP and TQ?

December 17th, 2006, 06:46 PM	#1
jhooper Newbie Join Date: Dec 2006 Posts: 2 iTrader: 0 reviews	8.8' Rear end vs. 9" rear end I'm looking to change out my 8" rear end in the next couple of months. I've heard that the Ford 9" rear end is one of the most durable rear ends ever made. I'm looking to run a 3.73 gear, and wanted to know if there was any benefit to going to an 8.8" rear end......beside the fact that they are more plentiful. Also, are there any modifications needed if I swapped my 8" for either the 9" or the 8.8" rear end. Thanks, Jeff

December 18th, 2006, 04:10 AM	#2
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	Why do you want to get rid of the 8"? I wouldn't change it unless you are making alot of horsepower. I know first hand those 8" rear ends will handle a good amount of power in stock form. Are you sure its an 8"? They are very similar to a 9" too with a drop out center section. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

December 18th, 2006, 07:30 AM	#3
Horseshoeing Classic Moderator Join Date: Aug 2005 Location: GA Posts: 4,177 iTrader: 0 reviews	You can get a bolt on 9" for about $600 at the junkyard. A 9" is easy to swap gears. If yo want a 9", get a a lincoln Versailles rearend. I am guess it will fit you car not knowing what it is. __________________ Classic Mustangs are the best! Get one.

December 18th, 2006, 10:22 PM	#4
chevy_killer Enthusiast 2009 v6 Mustang Join Date: Nov 2006 Location: Winter Haven Florida Posts: 947 iTrader: 0 reviews	just go to http://currieenterprises.com/ and check these rear ends out __________________ The LS1 was finally subjected to a paternity test, and it's daddy was to '03 Cobra

December 20th, 2006, 12:20 AM	#5
69fastback Premium Member 1969 Mustang Mach 1 7.324@94.61 N/A Join Date: Aug 2006 Location: Oklahoma jackass, get to driving Posts: 4,528 iTrader: 0 reviews	Doesn't the 8" rear end swap gears just like the 9"? __________________ ProSystems Aeromotive TFS MSD Bullet Induction Solutions PA Moser

February 24th, 2007, 03:58 PM	#7
latamud Regular Join Date: Feb 2007 Location: Dayton, OHIO Posts: 158 iTrader: 0 reviews	Versailles rear ends are nice if you can find them, 9" with disc brakes. I picked mine up in the salvage yard for $125 ready to bolt in. It came with a Trac Loc too! 67-70 Mustang rear ends are all interchangeable. If you happen to have any of those years its worth knowing. 65-73 Bronco rear ends are the same width as a versailles rear but take more to get bolted under a Mustang. __________________ 66 Coupe, Supercharged 408 Clevor, Viper T56, Cobra IRS 66 Coupe, Supercharged 03 Cobra drivetrain and suspension (project) 03 Viper, Supercharged

August 13th, 2008, 03:29 AM	#8
homeboy2kfun Regular Join Date: Oct 2007 Posts: 70 iTrader: 0 reviews	Dos anyone know what axles are interchangeable Dos anyone know what axles are interchangeable with the 2001 mustangs or better what cars use the 8.8 or 9 axle that would fit the 2001

August 13th, 2008, 10:55 AM	#10
460brevill Hardcore Enthusiast Join Date: Apr 2007 Location: Farmville VA Posts: 1,327 iTrader: 0 reviews	the 8 inch and the 9 inch lool alike.both will take a lot of punisment.if you are not punching 600 hp,leave the 8 in there and build it. __________________ i sixing 200 six with 300 hp.

August 17th, 2008, 01:56 PM	#11
aintsheperty66 Regular 1966 Mustang Coupe Join Date: Jun 2007 Location: Hendersonville, NC Posts: 127 iTrader: 0 reviews	The 8 inch is a decent rear-end. But there's no breaking a Ford 9 inch. If you do, I'll buy you a new one. Lol.

October 20th, 2008, 03:23 PM	#12
Lankolf Regular 97' 3.8 and 65' GT 289 Join Date: Aug 2007 Location: Colorado Posts: 163 iTrader: 0 reviews	I saw a nine inch broke once, it was shattered in the back. It was a 65 fastback with what I was told original 289 dbl 4 barrel carbs on racing slicks. __________________ Your love of the Halfling's leaf has clearly Slowed your mind. -Saruman, Fellowship of the Ring I am the Lizard King, I can do anything. -Jim Morrison, The Doors

October 20th, 2008, 03:29 PM	#14
speedfreak Newbie 2004 3.9L V6 15.1 Join Date: Oct 2008 Location: West Palm Beach Posts: 43 iTrader: 0 reviews	The 9 inch is one of the best rear ends ever made. It is the basis for most racing rear ends used today. If you get one for your car it will bolt right in without any modifications for the most part. As long as you get a basic one for your car there are no mods. __________________ Race what ya Brought

March 25th, 2011, 02:38 PM	#15
Israel Regular Join Date: Feb 2011 Posts: 97 iTrader: 0 reviews	Waay old, but how does the cost and availability of the 8" compare to the 9"? I imagine 9" are getting hard to get cheap in the yards.

March 25th, 2011, 03:05 PM	#16
MustangOne Lost in the 60's 1968 GT 500 Super Snake 12.6 @ 114.3 Join Date: Mar 2008 Location: Sapulpa Oklahoma Posts: 1,943 iTrader: 0 reviews	Why didn't you just make new thread to ask that? Old Mustang 8" are a lot more plentiful that a old Mustang 9" The 8" came in everything with a 289 or 302 in it. Witch most of all of them had. The 9" came in only high performance Mustangs with 351 or bigger. 8" not rebuilt is $250, 9" not rebuilt is $350 to $450 when you can find them. you can find 9" in trucks and bigger old 70's cars but they are about 2" wider. __________________ MustangOne's Car's How to post Photos in Your Thread. Vote for your Favorite Ride of the month, Every Month Modded Mustangs Facebook

March 26th, 2011, 11:56 AM	#18
Triton Newbie Join Date: Mar 2010 Posts: 5 iTrader: 0 reviews	I have a 9" from a Lincoln in my mustang, I did it for the disc brakes and the posi rear end. If I had to do it over again I would stick to the 8" because on a light car like the Mustang if your not pushing out a lot of hp it seems to be too much un-sprung weight and the car does not handle as nimble

April 24th, 2011, 11:41 PM	#20
Israel Regular Join Date: Feb 2011 Posts: 97 iTrader: 0 reviews	What years did the late models use an 8.8 rear, or are they still using them, and what are they rated for in HP and TQ?

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