Will the 7.5 rearend hold up? - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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  #1  
Old 07-29-2008
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Will the 7.5 rearend hold up?

What do you think? Add some 31's and a lockrite into a 7.5 rearend....am I looking at replacing the reaend VERY soon after, or will it hold up?
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Old 07-29-2008
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I think it'll hold up......but why? really....think about it.
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Old 07-29-2008
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would the locker possibly go in both carriers?

but if your planning on just getting a new axle, save and put the locker in it.

i've seen a 7.5 put though its paces with 35x14.50s and it held. but theres no telling how long it will
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Old 07-30-2008
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I was looking for options to save a little money....I mean, the rearend is alrweady under there, might as well use it til it explodes, right? But on the other hand, knowing that a 8.8 will hold up even better would be money well spent....
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Old 07-30-2008
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A 7.5 can take a good amount of abuse, you should be alright for quite a while.
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Old 07-30-2008
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With only 31s, I wouldn't be worried. The 7.5 should be fine.
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Old 07-30-2008
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they're the same size axle shafts just so you know
unless your going with the 31 spline
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Old 07-30-2008
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well, I was planning on going with the 31 spline 8.8 out of an explorer. But, like everyone else has said, the 7.5 should hold up to 31's so I might be saving some money so I can put it towards recovery gear, gears, etc....I will definatly need them too lol
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Old 07-31-2008
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your 4.10s should be fine i would think, i ran 33s on 4.10s for about a year with my underpowered 4.0 which probably has as much power as your 3.0..

Last edited by 99ranger4x4; 07-31-2008 at 09:47 PM.
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Old 07-31-2008
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You should be fine for awhile. I ran a 7.5 in my 88 with a 302 and 31's, it didn't self destruct until the guy i sold it to start drag racing it with slicks.
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Old 07-31-2008
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you will be more than fine with that setup unless you run it dry of course. I have 100's of thousands of miles on my 7.5 with 31s and a lockright and I beat the **** out of it constantly. The only issue I've had is I actually blew up the lock-right, but the axle wasnt damaged at all so I just swapped the spiders into it and kept going till I got the lock-right warrantied.
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  #12  
Old 08-02-2008
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i snapped my centerpin with 33's on my 7.5 buy an 8.8
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  #13  
Old 08-03-2008
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was it a notched or soild center pin?
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  #14  
Old 08-17-2008
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you should be alright. i ran 315/75r16 buckshot and then 34/10.50 super swamper LTB on my ranger with a 3.0 and a 7.5. i was extremely hard on the truck too. i was just going to run it until it destroyed but it never messed up. so 31s would be easy on it.
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  #15  
Old 08-17-2008
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The locker for the 7.5 will not work with the 8.8.

I ran my old 7.5 with a Lock-Right and 31's for just about a year with no problems.

I have said this before and I will say it again.
The weak link in the 7.5 is the notched cross pin.
Get a Lock-Right and make sure the solid cross pin they give you gets installed.

/soapbox
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