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Spool in a 7.5 10 bolt, Break or not to bread??

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Old Mar 5, 2005 | 02:08 PM
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Default Spool in a 7.5 10 bolt, Break or not to bread??

I am wanting to put a moser spool and 30 spline axles in my stock gm 7.5 10 bolt.

Is this a good idea considering i dont have the cash for a 12 bolt, and the stock posi wont hold much hp.

If i uderstand stock rearends,
7 out of 10 break the posi,
1 out of 10 break the teath off the gears
2 out of 10 break axles

So if i upgrade the axles to moser 30 spline and repalce the posi with a spool, then my rearend should last somewhat longer, right??

I only have 320 hpN/A(470 NX) but i am wanting to pull low 1.6 60fts. A friend of mine blew his rearend out the week after he pulled three 1.6 60 ft with nitrous. I dont want my rearend to blow in dallas, on a good track, 5 hours from home.

Is this setup stronger than stock 4.11's with a gm posi??
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Old Mar 5, 2005 | 04:39 PM
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It will last longer, but only marginaly. Once you upgrade the axles and diff the ringis the next weak link, so it is only a matter of time. Also, I have never seen a full spool with 30 spline for a 7.6. I dont think you can even get a full spool for a 7.6 at all, not that I have seen.
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Old Mar 5, 2005 | 06:16 PM
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from what i've seen, 90% break the gears.

my pinion broke 8 of the 13 teeth off.

just save your money and buy a 12 bolt, leave the stock gear in your rear end and put your efforts into getting a 12 bolt (or 9").

i definatly wouldnt go to a track thats 5 hours away unless i trailered my car there.

my thoughts on 10 bolts - you can polish a turd, but you still have a turd
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Old Mar 5, 2005 | 06:18 PM
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- and i also have NEVER seen a full spool for a 10 bolt, they make mini-spools, but thats just asking for trouble.

you can buy a COMPLETE 10 bolt w/ gears/diff/axles etc. for around 300 bux on this board. thats cheaper than an upgraded posi for one
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Old Mar 5, 2005 | 06:18 PM
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Originally Posted by TheBlurLS1
from what i've seen, 90% break the gears.

my pinion broke 8 of the 13 teeth off.

just save your money and buy a 12 bolt, leave the stock gear in your rear end and put your efforts into getting a 12 bolt (or 9").

i definatly wouldnt go to a track thats 5 hours away unless i trailered my car there.

my thoughts on 10 bolts - you can polish a turd, but you still have a turd

i agree. i think the teeth break first from what i seen.
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Old Mar 5, 2005 | 06:28 PM
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another option would be the good 'ole lincoln locker for the 10 bolt!







lincoln locker - using a lincoln welding machine on the spider gears
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