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Old 02-24-2020, 11:03 AM   #1 (permalink)
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Hi pinion front?

About to order a hi pinion front with 5:29ís.
Some companies offer a spool as an option and others do not. Iíve run a low set up front and rear with a spool with out issues until this past weekend and blew up the rear 3rd gear set. Going to swap the front 3rd to the rear and do the hi pinion up front to help with pinion angles and strength.
My question being. Can I run a spool hi pinion up front. If not recommendation on the locker choice.
Iím full hydro and have zero issues turning.


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Old 02-24-2020, 12:09 PM   #2 (permalink)
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Originally Posted by justin.cowart.3 View Post
About to order a hi pinion front with 5:29ís.
Some companies offer a spool as an option and others do not. Iíve run a low set up front and rear with a spool with out issues until this past weekend and blew up the rear 3rd gear set. Going to swap the front 3rd to the rear and do the hi pinion up front to help with pinion angles and strength.
My question being. Can I run a spool hi pinion up front. If not recommendation on the locker choice.
Iím full hydro and have zero issues turning.


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Hp and v6 use the same carrier, so yes you can run a spool.

Did you check for run out on your rear spool? The general consensus is that spools deflect too much and can cause r&p failure and eventually bend.

Detroit or grizzly might be a better bet for the front.
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Old 02-24-2020, 12:27 PM   #3 (permalink)
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You may not have a problem turning with a spool and full hydro but it still puts a huge bind on your front end components. I just installed a 5:29 high pinion 29 spline Detroit in mine but I haven't drove it yet. Knowing what I know now after blowing up a Detroit rear when an axle shaft let go I would go with a Grizzly.
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Old 02-24-2020, 01:06 PM   #4 (permalink)
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It will be exactly the same as you have now. Why would you think that a spool would make a difference in anything between hi and low pinion?
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Old 02-24-2020, 01:24 PM   #5 (permalink)
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Id go with a full carrier locker over a spool in the front. Ran a Detroit for years in a HP third with no problems.
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Old 02-24-2020, 01:43 PM   #6 (permalink)
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Hp and v6 use the same carrier, so yes you can run a spool.



Did you check for run out on your rear spool? The general consensus is that spools deflect too much and can cause r&p failure and eventually bend.



Detroit or grizzly might be a better bet for the front.


No I havenít check run out yet. 3rd gear clutch dumps on a ledge I think did it. But I will check.
Thank you for your advice.


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Old 02-24-2020, 01:44 PM   #7 (permalink)
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You may not have a problem turning with a spool and full hydro but it still puts a huge bind on your front end components. I just installed a 5:29 high pinion 29 spline Detroit in mine but I haven't drove it yet. Knowing what I know now after blowing up a Detroit rear when an axle shaft let go I would go with a Grizzly.


Iím hearing good things on the grizzly. Thank you sir


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Old 02-24-2020, 01:45 PM   #8 (permalink)
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It will be exactly the same as you have now. Why would you think that a spool would make a difference in anything between hi and low pinion?


Some say itís no Bueno in the high pinion front. And this is why I asked the question


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Old 02-24-2020, 01:49 PM   #9 (permalink)
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Id go with a full carrier locker over a spool in the front. Ran a Detroit for years in a HP third with no problems.


A lot of people knock Detroit iíve never ran one in the front. I ran a Detroit in the rear of a tow rig and loved it. Just engaged pretty harsh around turns.


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Old 02-24-2020, 02:01 PM   #10 (permalink)
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I would run a grizzly then (not Detroit) . But if you have had no issues with a spool, you probably aren't going to later. I run welded on everything because I do not feel the need to buy spools, when I do not care about weight, and my welder works very well. If I were going to spend any money on a front locker, it would be ARB. Whether I was full hydraulic or not. If I am going to spend money on lock, it better be able to unlock.
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Old 02-24-2020, 03:10 PM   #11 (permalink)
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I would run a grizzly then (not Detroit) . But if you have had no issues with a spool, you probably aren't going to later. I run welded on everything because I do not feel the need to buy spools, when I do not care about weight, and my welder works very well. If I were going to spend any money on a front locker, it would be ARB. Whether I was full hydraulic or not. If I am going to spend money on lock, it better be able to unlock.


Yes sir I agree. Arbís are expensive and worth the money. A lot of the guys I wheel with run them and wouldnít go another route.


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Old 02-24-2020, 03:56 PM   #12 (permalink)
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id run a welded factory carrier instead of a spool, less carrier deflection will increase gear strength and imo a factory carrier is going to deflect less than a spool will under shock loads.
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