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| | == Pump modifications == | | == Pump modifications == |
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| − | ===Pump Splines===
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| − | A transmission's pump uses splines that rotate on a circle off center. They are "open" at one point, allowing the gaps between the splines to fill with oil then "closed" at another to push it out through another passage. Using more splines in a pump gives a better, more consistent flow of fluid. Since fluid pressure is how automatic transmissions work, a solid pump helps make a solid tranny. For the 700r4 or its later, almost identical, twin the 4l60E, a 29 spline pump is one of the most popular choices for an effiecent and durable pump.
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| | ===Drain back holes=== | | ===Drain back holes=== |
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