Difference between spool and eaton posi?
08-19-2006, 10:32 AM
#1
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Car: IROC-Z
Engine: LSx
Transmission: T56
Axle/Gears: Fabbed 9"
Difference between spool and eaton posi?
Id like to know whats the diff. between a spool and eaton posi. Its gonna mostly be used for street use.
08-19-2006, 06:58 PM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
A spool locks the axles together so they always turn the same speed. This is great for straight line accelleration but on the street you drive around curves and corners. When turning any little bit, the inside tire has a shorter distance so it rotates less than the outside tire. Any kind of differential such as an open diff or any type of posi, allows slippage inside the diff for turns. A spool does not so in a turn one tire will break free of traction to match the speed of the other tire. In poor road conditions such as wet pavement, this can cause a loss of handling.
For any street use just buy a good posi.
For any street use just buy a good posi.
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