8.8 Rear End - Forums at Modded Mustangs
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post #1 of 24 Old January 18th, 2012, 01:52 PM Thread Starter
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8.8 Rear End

Hey guys,

I'm looking to upgrade the 7.5 to the 8.8 rear end with 3.73 gears. I'm trying to find the cheapest and most efficient way to go about doing so, but not finding too many options. I'm looking for some opinions and solutions of how to go about obtaining this. This Ford Racing SVT Mustang Rear Axle Assembly (05-12 GT/GT500) M-4001-SVT373 - Free Shipping! looks like one of the better solutions.


For you guys that did the upgrade, What are some of the methods you used to go about obtaining this?

Open to hearing ideas from people who obtained parts piece by piece to complete, or got it fully assembled.

Thanks
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post #2 of 24 Old January 18th, 2012, 02:00 PM
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I did this. Picked one up from my buddies shop. It was complete. Direct bolt in. But you have to use the flange off the 7.5. It was 600 bucks.

http://www.newtakeoff.com/mustang-20.aspx

Or try a junkyard and see if theres any wrecked cars there.
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post #3 of 24 Old January 18th, 2012, 02:20 PM
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I got mine from craigslist which came out of a 2008 Bullitt GT. Your most cost effective option would to just find a wrecked GT and get it out of that and switch the gears if you need to. If you go get a GT 8.8, you are gonna need the Cobra pinion flange which I got from my local ford dealership for about $40.

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post #4 of 24 Old January 22nd, 2012, 02:37 PM Thread Starter
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So I found a guy willing to sell me a complete 8.8 rear end fully assembled with 3.73 saleen gears with less than 11k miles for $800... what do you guys think about that deal? good move for me?
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post #5 of 24 Old January 23rd, 2012, 01:11 AM
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post #6 of 24 Old January 23rd, 2012, 09:29 AM
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Do It.
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post #7 of 24 Old January 24th, 2012, 09:18 AM
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Not attempting to steal your thread just didn't think we needed two threads about rear ends. I have a 2010 v6 and was wondering if the 05-09 8.8 would fit my year as well?
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post #8 of 24 Old January 24th, 2012, 07:33 PM
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8.8

anyone got a link to a good place to pick up an 8.8? im having trouble finding anything local. Also not trying to thread jack.
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post #9 of 24 Old February 9th, 2012, 04:38 PM Thread Starter
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Ok guys, going to pick up the fully assembled 8.8 rear with 3.73:1 gears. it cost me a total of $950 including $150 for shipping/handling. Now the next problem is.... How much of a headache will this be to install myself? whats an estimate of the cost of labor to have a shop install it?
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post #10 of 24 Old February 9th, 2012, 04:48 PM
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Quote:
Originally Posted by DJRich13 View Post
Ok guys, going to pick up the fully assembled 8.8 rear with 3.73:1 gears. it cost me a total of $950 including $150 for shipping/handling. Now the next problem is.... How much of a headache will this be to install myself? whats an estimate of the cost of labor to have a shop install it?
Do it yourself. Its easy. You dont even have to touch brake lines. Just unbolt everything and switch it out. The only thing you might have to is change the Pinon Flange to yours if it isnt already the correct one.
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post #11 of 24 Old February 13th, 2012, 01:59 AM
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Originally Posted by DJRich13 View Post
Hey guys,

I'm looking to upgrade the 7.5 to the 8.8 rear end with 3.73 gears. I'm trying to find the cheapest and most efficient way to go about doing so, but not finding too many options. I'm looking for some opinions and solutions of how to go about obtaining this. This Ford Racing SVT Mustang Rear Axle Assembly (05-12 GT/GT500) M-4001-SVT373 - Free Shipping! looks like one of the better solutions.


For you guys that did the upgrade, What are some of the methods you used to go about obtaining this?

Open to hearing ideas from people who obtained parts piece by piece to complete, or got it fully assembled.

Thanks
I actually just had this GT500 Rear end put into my 05 v6 Mustang about a month ago, and I am quite happy with it. Definitely more cost efficient, and time efficient to do this in comparison to buying the separate parts. It also gives you a considerable power gain, especially with the lower gears (in acceleration). The 3.73's are great because they don't take off really on the top end, but at the same time give you a great start.

All you need is a flange, which allows the 8.8 rear to work with your v6's 7.5 inch driveshaft. I got mine from the site below, and it came in just a couple of days:

Ford 2003-2004 Cobra 8.8 Pinion Flange, Speed Concepts

If you haven't already done so, I highly suggest tuning your mustang, especially with these new gears. It will really give you the most power gain out of them.

On top of all of this, the GT500 rear gives you a much smoother ride, at least I think so. I used to go over potholes and felt like my car's axle was going to break, not anymore!

Good luck !

SenileT
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post #12 of 24 Old February 13th, 2012, 02:00 AM
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Originally Posted by DJRich13 View Post
Ok guys, going to pick up the fully assembled 8.8 rear with 3.73:1 gears. it cost me a total of $950 including $150 for shipping/handling. Now the next problem is.... How much of a headache will this be to install myself? whats an estimate of the cost of labor to have a shop install it?
Wow, just saw this. I took it to be installed professionally, but I hear it is rather easy as long as you can lift up your stang and you have the flange.

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post #13 of 24 Old February 13th, 2012, 12:01 PM Thread Starter
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It's coming off a 2006 Saleen with only 10,000 miles on it... appears to be in great shape. I'll end up getting the $40 flange for now... i'm not quite ready to upgrade the drive shaft. I also wanted the 3.73 opposed to the 4.10 for when I put in a supercharger. I already have the SCT tuner, and have the tune for the new 3.73 gears.

I'm going to opt to have it professionally installed as well. With it being my DD, I cant afford to mess around with it too much (working 6 days a week) and with a very limited know how. I will try and drop it off at the shop on Friday and leave it there while i'm out of town till Tuesday.


Cant wait to get this thing in
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post #14 of 24 Old February 14th, 2012, 01:34 AM
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i dont see the point into a 8.8 rear end unless your going with a supercharger or a turbo. I did the 3.73 gears and tlok. No problems.

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post #15 of 24 Old February 14th, 2012, 09:05 AM
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post #16 of 24 Old February 14th, 2012, 10:13 AM
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Quote:
Originally Posted by stevenb913 View Post
i dont see the point into a 8.8 rear end unless your going with a supercharger or a turbo. I did the 3.73 gears and tlok. No problems.
+1 The 7.5 is fine for most V6's. However the cost of upgrading the gears and having a T-loc installed is only a few hundred bucks cheaper then swapping to an 8.8.

1968 Mustang 5.0/T5 Build Thread
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post #17 of 24 Old February 14th, 2012, 11:19 AM Thread Starter
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i dont see the point into a 8.8 rear end unless your going with a supercharger or a turbo. I did the 3.73 gears and tlok. No problems.
The X-Charger is the next investment. I'll be saving up over the next 6-12 months.
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post #18 of 24 Old February 14th, 2012, 03:19 PM
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+1 The 7.5 is fine for most V6's. However the cost of upgrading the gears and having a T-loc installed is only a few hundred bucks cheaper then swapping to an 8.8.
Did my gears and tlok for under $400 installed buddy. Cant get a rear installed cheaper then $800

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post #19 of 24 Old February 14th, 2012, 03:57 PM
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I don't know how you managed that seeing as how a Tloc and gears come to just about $400 themselves. Must have found a great sale and had a great installer.

For the average Joe you are prolly looking at closer to $6-700.

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post #20 of 24 Old February 28th, 2012, 09:52 PM Thread Starter
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Got the cobra flange in today, and the rear end swap is completely finished. Only problem is that my ABS and TCS lights are on. There's a bolt missing on drivers side which i think is causing the problem. Hope I can get to it this weekend.

I'm loving the new feel to this car with the 3.73 gears, feels like a very different car. This modding is so contagious and dangerous haha.
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