how strong is an 8.8 rear end?

rallye72 · Sep 23, 2005

Hi, I'm new to the board and haven't really played with Fords that much. I was wondering how stout is an 8.8 rear end from an 87 to 93 5.0 mustang? If I was running say.... 450 horse in a 3000 LBS car, will it grenade on me? Thanks

RacEoHolic330 · Sep 23, 2005

The housings are very strong. The axles and diff are another story. It all depends how you drive your car. Personally, I would get stronger axles, a posi rear end, and a girdle. I bought a pair of 31 spline Superior axles, a Eaton posi and a trick flow rear end girdle. I'm not worried about anything in the rear breaking, all I'm worried about now is my block and trans, haha.

slow93 · Sep 23, 2005

yeah with that much hp i would upgrade the posi unit and prolly go to at least 31 spline.i have blown 2 of em with all the stock 28 spline stuff.

criticman · Sep 23, 2005

As with pretty much every question like this "how strong is X and will X support Y power?"...it all depends on how you drive it. If you are nice to it, it will be fine. If you put on slicks and do 4000+RPM drops, it will break.

gruvee87vertgt · Sep 24, 2005

well, the only thing I can add is I know jeep guys love and must throw a Ford 8.8 on to run those giant rock/mudd climbing tires. The guys beat the hell of of there jeeps with all the mountain climbing and mudd slinging.

Obsol3te · Sep 24, 2005

criticman said:
As with pretty much every question like this "how strong is X and will X support Y power?"...it all depends on how you drive it. If you are nice to it, it will be fine. If you put on slicks and do 4000+RPM drops, it will break.

He speakeths the truth.
Matter of fact mine just blew last night
Guess 28 spline axles wernt meant to take a beating from 420+rwtq w/ ET Streets.

87'GTstang · Sep 24, 2005

One of the questions i've been trying to figure out for awhile is how strong the stock 28 spline count with aftermarket axles are?

Modular2v · Sep 24, 2005

if u drive it only on the street YES it will be fine

-86GTStang · Sep 25, 2005

87'GTstang said:
One of the questions i've been trying to figure out for awhile is how strong the stock 28 spline count with aftermarket axles are?

Stronger than stock, at least. Installed a pair of Superior axles from Summit,and Moroso studs, new bearings and seals. Launched at 4500-5000rpm approx 80times this summer, and my stock rebuild diff still works fine. Only added two extra friction disk, and new oil. Raceweight of my car is 1590kg.
Of caurse, a new 31-33 spline unit is better, but the stock part aint that bad. Just Me.

Allforspeed · Sep 25, 2005

people have gone 10's on the stock rear end, just as people have gone 10's on the stock t-5, seems like most people start breaking both around the high 11's low 12's depending on how yu druve it

how strong is an 8.8 rear end?

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