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Tranny - Lockup vs non lockup

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by TXsizeK5, Jan 31, 2002.

  1. TXsizeK5

    TXsizeK5 1/2 ton status

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    What is the difference? Pro's and Con's of each? Thanks

    87 Custom Deluxe
    305/Sm465/ NP208
    4.56 , 35" BFG Muds, CatCo Cat & Series 40 delta flow 3" tips.
    6"Springs, Tranny, & Engine coming soon.
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Locking the torque converter. The inherent "slip" of the torque converter is removed by re-routing fluid, a clutch, and a solenoid in the tranny. (more to it than than that, but thats basic)

    Imagine a torque converter as a manual transmission clutch that was never fully engaged...thats why you can idle with an automatic in gear. The torque converter eliminates that "feature" in certain gears and at certain speeds.

    Freeway/cruising constant speed, above typically 35MPH: Better mileage, cooler tranny fluid.

    Below 35mph (again, roughly), accelerating: no advantage.

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a>
    Why insist on counting when the ring gear has the tooth counts stamped in?
     

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