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08-13-2017, 03:13 AM
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#1 |
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Member
Join Date: Mar 2007
Posts: 346
Likes: 19
Liked 20 Times in 15 Posts
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Posi or spool
For a low class stocker, T/U, is a post unit more efficient to use, less reciprocating weight? Any other advantages?
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08-13-2017, 06:25 AM
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#2 |
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Senior Member
Join Date: May 2004
Location: Brookfield, CT
Posts: 708
Likes: 13
Liked 319 Times in 68 Posts
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Re: Posi or spool
Spool is lighter,if you pay attention to the circumstances of the tires a posi doesn't help.
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Lee Valentine 1661 STK |
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08-13-2017, 07:52 AM
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#3 |
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VIP Member
Join Date: Nov 2001
Location: Florida
Posts: 1,542
Likes: 34
Liked 138 Times in 51 Posts
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Re: Posi or spool
Weight is always important, especially when you don't have much HP to get it moving. Plus there are no moving parts to break or wear out with a spool. Cheaper too!
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LOCOMOTION Racing |
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08-13-2017, 09:50 AM
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#4 |
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VIP Member
Join Date: Jun 2007
Location: from Vancouver BC Canada, now in Nova Scotia
Posts: 1,311
Likes: 317
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Re: Posi or spool
Spool. In addition to lighter, stronger, and cheaper, zero chance of the clutches in a limited slip unit slipping.
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NHRA 6390 STK M/S 85 Mustang |
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08-13-2017, 12:35 PM
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#5 |
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Member
Join Date: Feb 2008
Location: Black Creek, BC Canada
Posts: 331
Likes: 79
Liked 172 Times in 81 Posts
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Re: Posi or spool
I've tried both, never really noticed any difference. I currently run a spool in the original 6 cylinder rear end (Dana 35), it is a little quicker than the big V8 rear end I ran originally.
Jim Mantle V/SA 6632 |
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08-15-2017, 12:37 AM
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#6 |
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Member
Join Date: Apr 2005
Posts: 494
Likes: 6
Liked 25 Times in 16 Posts
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Re: Posi or spool
How do the aluminum spools hold up with a low HP engine? I'm thinking of using one with a 273 2bbl engine in a Dart. I'm estimating I need 225 HP to run the index.
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Mopar 2 Ya! |
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08-15-2017, 08:24 AM
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#7 |
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Member
Join Date: Mar 2011
Posts: 186
Likes: 0
Liked 28 Times in 15 Posts
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Re: Posi or spool
We ran a MW aluminum spool in a 1200 HP 2000 lb 5speed B/D for several years and never broke one - I feel they will work with lower HP car on 9" tires
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08-15-2017, 08:43 AM
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#8 |
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VIP Member
Join Date: Oct 2002
Location: On a hilltop in Pa.
Posts: 4,498
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Re: Posi or spool
I've always used posis in my stuff. They have to be more forgiving of any down-track movements.
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Billy Nees 1188 STK, SS I'm not spending 100K to win 2K |
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