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09-07-2014, 11:49 AM
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#1 |
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Junior Member
Join Date: Oct 2013
Location: Winfield, Kansas
Posts: 37
Likes: 14
Liked 17 Times in 4 Posts
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GM 8.5 mini spool
Anybody run a mini spool in a 8.5 GM rear end? Will they survive in a low horsepower stocker?
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09-28-2014, 08:30 PM
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#2 |
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Member
Join Date: Jan 2002
Location: Sedalia, Mo
Posts: 437
Likes: 331
Liked 317 Times in 62 Posts
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Re: GM 8.5 mini spool
They are recommended for dirt track cars only. I don't know why.
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Bob Shaw V/SA 515 |
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09-28-2014, 10:42 PM
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#3 |
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Veteran Member
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,818
Likes: 2,909
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Re: GM 8.5 mini spool
J,
A posi-traction will survive in a low hp automatic Stocker. I don't see why a mini spool wouldn't.
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"We are lucky we don't get as much Government as we pay for." Will Rogers |
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10-04-2014, 09:50 AM
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#4 |
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Senior Member
Join Date: Apr 2009
Location: Omaha, NE
Posts: 702
Likes: 202
Liked 91 Times in 51 Posts
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Re: GM 8.5 mini spool
I believe a mini spool is not legal in NHRA. You are also required to have aftermarket axles when running a spool.
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10-10-2014, 02:07 PM
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#5 |
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Member
Join Date: Jan 1970
Location: Jackson, Ms.
Posts: 350
Likes: 183
Liked 12 Times in 4 Posts
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Re: GM 8.5 mini spool
When I bought my H or J/SA 1980 Camaro it had a mini spool in it and had hundreds of passes on it without failure.
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#4892 J/SA. We are what we repeatedly do. Excellence then, is not an act, but a habit.” - Aristotle |
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10-10-2014, 02:37 PM
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#6 |
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Junior Member
Join Date: Mar 2013
Posts: 80
Likes: 12
Liked 27 Times in 6 Posts
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Re: GM 8.5 mini spool
It may last, but it is more prone to failure because with a mini-spool, all the load from the ring gear to the axles is transmitted only through the pin, to the bore in the cast case. With a posi unit, most of this load is transmitted through the clutches, into the inside of the case.
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