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Do you have to swap the rear??

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Do you have to swap the rear??

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Old 02-13-2006, 04:42 PM
  #1  
jayc283
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Join Date: Feb 2006
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Default Do you have to swap the rear??

ITs me again with the 4cylinder....when u swap to the 302 or bigger im pretty sure u have to swap the tranny but do u have to swap the rearend i have the 7.5 i think do i have to go 8.8 please someone out there help ??
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Old 02-13-2006, 04:55 PM
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ben5.0
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Default RE: Do you have to swap the rear??

yes. from what i understand, 7.5 inch wont hold up under the increase in horsepower. the 8.8 is a must
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Old 02-13-2006, 05:16 PM
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4eyedfreak
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Default RE: Do you have to swap the rear??

Thats not true because depending on the power of the engine swap a 7.5 with whatever stcok gear could hold. The 8.8 rearend houses a more circle gear which is better than the 7.5 which houses a more oval gear. To save the money, unless your really going to build the car, i would just get 3.55's or swap out the gear in the 7.5 to whatever, they do make gears for the 7.5. My 83 had a 7.5inch with my stock v8 5.0. The only reason why i got an 8.8 was because i bought the whole rearend fullybuilt for cheap....And i mean cheap. I hade it checked out by a driveline shop and they refreshed everything and i had a brand new fully built strange rearend.
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Old 02-13-2006, 08:10 PM
  #4  
hotstang97gt
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Default RE: Do you have to swap the rear??

it will hold but im not shure on how long though. might as well just get the 8.8. where abouts you located? i have one that i will let go for cheap
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Old 02-13-2006, 09:51 PM
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BADNOTCH
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Default RE: Do you have to swap the rear??

You can get a 8.8 housing and install the axles out of your 7.5, they are the same axles, you will just be runnin a bigger ring gear. I have had a 7.5 hold up to a pounding. If you run across a good deal on an 8.8 pick it up, until then put a gear in the 7.5 and run it till it breaks.
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Old 02-14-2006, 06:04 PM
  #6  
jayc283
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Default RE: Do you have to swap the rear??

Garland tx is where im at....thanks guys
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Old 02-14-2006, 07:51 PM
  #7  
hotstang97gt
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Default RE: Do you have to swap the rear??

im shure shipping would be alot to ship it out there so i guess you wouldent want to. if you looked into want ads im shure you could find a good deal. good luck
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