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Old Jun 22, 2010 | 10:19 AM
  #1  
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From: Norcal
Default Spool Question,

At what point is a spool a good idea and or necessary? Currently, the car in question has a Moser 12 bolt with an Eaton posi, 33 spline axles and 3.73's.
The car runs high tens at about 128 mph. 60's have ranged between 1.44 to 1.5x's. We're thinking about switching to 4.10's and wondered if we should do the spool at the same time. The car rarely sees the street but we do drive it
occasionally to the track, which is 6.5 miles away. Race weight is 3690 if that matters.
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Old Jun 22, 2010 | 12:43 PM
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I think you are there. High tens and a mainly track car. I would if it were mine.
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Old Jun 22, 2010 | 12:47 PM
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My busted Tru trac Acts like a Spool, the worst I have seen is tires wear quicker. Driver fine in the rain and on the freeway. i also have a deleted front sway and a rear drag sway bar with SFC's, the car behaves very well. Oh and I also may mention Skinnies and Slicks are on the car too.
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Old Jun 22, 2010 | 07:05 PM
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sounds like your like it. I'd do it
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Old Jun 22, 2010 | 07:19 PM
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i just did a spool in mine. i wouldn't hesistate to do it. lot better than detroit locker IMO. i have about 150-200 miles so far on mine and it is fine.
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Old Jun 22, 2010 | 07:21 PM
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Id do it. Actually Im gonna do it and drive 50+ miles to the track
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Old Jun 22, 2010 | 07:23 PM
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also put 513 gears in too. with OD and 30 inch tire it cruises well down highway.
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Old Jun 22, 2010 | 08:02 PM
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Go with a spool and don't look back. I had a Detroit Locker before and hated that obnoxious thing.... I drive mine about 11 miles one-way to the track.

Mike
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Old Jun 22, 2010 | 08:04 PM
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2,000 miles on mine and I don't even know it is there unless I am backing out of the garage.
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Old Jun 22, 2010 | 08:19 PM
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Originally Posted by Spellbound
At what point is a spool a good idea and or necessary? Currently, the car in question has a Moser 12 bolt with an Eaton posi, 33 spline axles and 3.73's.
The car runs high tens at about 128 mph. 60's have ranged between 1.44 to 1.5x's. We're thinking about switching to 4.10's and wondered if we should do the spool at the same time. The car rarely sees the street but we do drive it
occasionally to the track, which is 6.5 miles away. Race weight is 3690 if that matters.
I did it back in 2005 and have never looked back! You will feel better knowing both tires are applying power to the ground at the same rate.

Good luck and enjoy!

N2
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Old Jun 22, 2010 | 08:54 PM
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How much lighter is a spool compared to a posi? Any before and after track results from a posi to a spool?
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Old Jun 22, 2010 | 09:22 PM
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I run a spool with M6 and 4.56 gears luv it would never switch back to posi and I street drive the car .
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Old Jun 22, 2010 | 10:40 PM
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Thanks for the responses guys, 4.10's and a spool it is...
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Old Jun 23, 2010 | 12:01 AM
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My DD has a spool...has for about 10,000 miles now.
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Old Jun 23, 2010 | 12:17 AM
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You guys will like it, a little bit different making tight turns, but its lighter and 1 less thing to worry about. Have one in my bucket
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Old Jun 23, 2010 | 09:15 AM
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I run a spool in everything. The only time its an issue is if the cars broke and you have to push it other then straight on the trailer. Then youll need a lot of help......

One thing I like about them is that when you pull up to a stop sign to turn rt say.....you dont need to use the brakes. you cant stop the car just by turning in abit....Lol.
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Old Jun 23, 2010 | 10:59 AM
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Originally Posted by 1320
I run a spool in everything. The only time its an issue is if the cars broke and you have to push it other then straight on the trailer. Then youll need a lot of help......
I can agree with this.

I was helping JL-ws6 get his car in his trailer at his home. No engine or trans and him sitting in the vehicle I am sure it was under 2800 pounds. It was one mother F'er to move with me alone on a flat surface with a decline and he car had skinnies. He was steering and braking.
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Old Jun 23, 2010 | 12:20 PM
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If you're keeping your car n/a I'd even consider a 4.30 gear while you're at it. 4.10 is good for mild power adders or if you're running a 26 inch tire, but if you have a 28 on it and are leaving it n/a I'd put a 4.30 in it.

I did the swap once I started spraying my car and it was seeing high 9's, I ran it with the posi into the 10.50 range, and never had a problem, same 33 sp eaton that moser put in a 12 bolt.
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Old Jun 23, 2010 | 04:28 PM
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Spool 4:56s 6 speed, Full Weight Dail Driver here..Does its job at the track and gets me home!
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Old Jun 23, 2010 | 04:30 PM
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Originally Posted by JL ws-6
If you're keeping your car n/a I'd even consider a 4.30 gear while you're at it. 4.10 is good for mild power adders or if you're running a 26 inch tire, but if you have a 28 on it and are leaving it n/a I'd put a 4.30 in it.

I did the swap once I started spraying my car and it was seeing high 9's, I ran it with the posi into the 10.50 range, and never had a problem, same 33 sp eaton that moser put in a 12 bolt.
Hmmm, the car is strictly NA and we are currently running a 28 MT radial. A friend also suggested a 4.30. We'll have to kick that idea around a bit.
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