Wow, Is this normal?

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02-06-2011, 10:04 AM

#21

JimC

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Join Date: May 2006

Location: Michigan again!

Posts: 8,579

Quote:

Originally Posted by MustangFirstCar

On the 4.0s, the stock limit is just about 115. This is because our drive shafts tend to come apart over 120. If you want, you can remove the limit with a tuner, but unless you get an 8.8 rearend from a GT, you won't want to.

Quote:

Originally Posted by livinloud98

just wondering how the 8.8 rear would prevent your drive shaft from coming apart? does the I thought the issue was the drive shaft coming apart in the middle not at the pinion flange on connected to the rear.

You are correct the rear end has nothing to do with the driveshaft coming apart issue. The upgrade to the rear end is needed as you increase the power to the rear wheels and use sticky drag tires; the 7.5 can't take that for long. I think that the 2011 comes with the 8.8 already for both the V6 and V8.

The driveshaft is fixed by replacing it with something like the Shaftmasters; plus you get the added benefit of using the power more efficiently because the engine doesn't have to spin up the heavy driveshaft to get the power to wheels.

Last edited by JimC; 02-06-2011 at 10:06 AM.