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Old 01-23-2014, 04:44 AM   #1
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Default 8.8 rear end or 3.73 gears?

Hey i have a 4.0l s-197 vortech supercharged h.o kit and i was thinking what would be better for my next move 8.8 rear end or 3.73 diff gears, what do you guys think?
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Old 01-23-2014, 05:47 AM   #2
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Why not both? You can find a used 8.8 rear that has 3.73's already in it. You would still have the stock rear to swap back, or sell as a complete.
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Old 01-23-2014, 06:03 AM   #3
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^^^ +1
why waste time on something you're going to do anyways!
Upgrade them both at the same time.
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Old 01-24-2014, 01:43 AM   #4
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Yeah, upgrade to a 8.8...and then gears you want in that. Don't bother wasting money on messing with gears in the stock 7.5.
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Old 01-24-2014, 09:45 AM   #5
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BOTH of course...

Do not waste your time stuffing 3.73s in a 7.5...
And if you do, do not buy Motive gears.
They are stamped with a flying "M" for reference...
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Old 01-31-2014, 02:01 PM   #6
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8.8 for sure....
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Old 01-31-2014, 06:37 PM   #7
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Another vote for the 8.8, makes all the sense in the world...
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Old 01-31-2014, 07:01 PM   #8
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Worst modding decision I ever made was trying to build a 7.5. All it took was a CAI, tune, and set of drag radials to break supposedly indestructible Richmond gears.

In the end it was actually cheaper to swap to the 8.8 than it was to build the 7.5 with tlok, 3.73's, and LPW girdle.
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Old 02-03-2014, 07:43 AM   #9
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Worst modding decision I ever made was trying to build a 7.5. All it took was a CAI, tune, and set of drag radials to break supposedly indestructible Richmond gears.

In the end it was actually cheaper to swap to the 8.8 than it was to build the 7.5 with tlok, 3.73's, and LPW girdle.
+1, I have a friend local to me I know personally that put a T-Lok and gears in his 7.5 and had issues with it making noises, etc. Had it rebuilt again, same issue. He has spent with parts and labor close to $750 or so and it still isn't right or as strong as the 8.8 stock.
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Old 02-03-2014, 10:02 AM   #10
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I agree with the group here, but I upgraded my 7.5 to 3.73's and t-lok. I chose Ford Racing gears and had them installed at Pro Dyno. That was over 40,000 miles ago and she's still holding up fine. And I don't exactly baby the car and have taken it to the track for a few runs. But you might as well go for the 8.8 if you have the opportunity.
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Old 02-03-2014, 10:02 AM
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