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New to me 1966 Super Wildcat 425 engine.


Zgoo
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I just purchased a complete all stock  1966 Super WILDCAT 425 Twin carb motor that was removed in the early 70's and stored in a shop. What kind of value would this bring if I decide to sell it? We are on the fence as what to do with it. We are in the middle of a build on a 1962 Chrysler 300 and I have a complete Viper drive train to install in it or this nailhead, Just trying to decide which way to go.  Also what is the the name of the 400 trans that was behind this engine?

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Buick called their Turbohydramatic 400 the "SuperTurbine 400" (ST-400).  The 1966 version would include the 'switch-pitch' torque converter feature.  Solenoids in the transmission connected through switches on the accelerator linkage and kick-down switch control the torque converter vanes.  At a stop (e.g., foot off the accelerator) and at a point just prior to kickdown, the converter is in high-stall mode.  Otherwise, it reverts to normal, low-stall mode.  This feature was used in Buicks from 1965 through 1967.

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