think my DD v6 deserves a minor upgrade, 7.5 rear end?

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12-01-2008, 06:34 PM

#11

rygenstormlocke

6th Gear Member

Join Date: Jul 2005

Posts: 5,172

Quote:

Originally Posted by musicheadt

Lots of useful info in this thread for those of us thinking about going F/I in the future, and swapping out rear ends.........

I had no Idea the 7.5 Detroit rear end was stronger, cheaper and lighter than the 8.8 GT take-off. I guess I was more focused on the ease of installation that the 8.8 might provide.

Thanks for the info guys!......good thread.
(runs off to research stuff)

Nice car. I'm in sterling too. Like Bill said, you ever run your car at OD or MD? Sometimes you can get a good deal on a 8.8 and save some coin if 3.55's is all you need. But the 7.5 should serve you well if you go this route.

12-01-2008, 06:52 PM

#12

Legion5

5th Gear Member

Thread Starter

Join Date: Aug 2006

Location: Near Wash. DC Posts: 13,541

Posts: 2,497

Quote:

Originally Posted by The Potato

You mean the 8.8 is more expensive.

nope the labor on the 7.5 is more than the 8.8 (more involved) but it is close.

12-01-2008, 07:42 PM

#13

tx_zstang

5th Gear Member

Join Date: May 2007

Location: Central Texas

Posts: 2,388

I have a 7.5 with FRPP 3.73s and a LPW girdle that I'm selling. Swapped it out of my '05 for a 8.8.

12-01-2008, 09:17 PM

#14

mustangman02232

6th Gear Member

Join Date: Dec 2004

Location: Ludlow, Mass

Posts: 15,864

Quote:

Originally Posted by Legion5

nope the labor on the 7.5 is more than the 8.8 (more involved) but it is close.

no its not, i was quoted $300 for gear and LSD install, and if you get a used 8.8 your going to want it rebuilt, now an 8.8 you can swap yourself, but for the extra $100 in labor for the 7.5, it will be stronger then the stock 8.8

12-01-2008, 09:56 PM

#15

Silver Vert 06

2nd Gear Member

Join Date: Mar 2008

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Posts: 197

You don't need new axles. The stock ones will still fit with the Detroit tru trac. They should be plenty strong. The only reason for upgrading them is if you plan to run a lot of boost and really need the extra strength.