johnceggleston Posted January 9, 2007 Share Posted January 9, 2007 i meant to ask this last month but i never got around to it. when the torque converter locks up and the rpms drop a couple of hundred , is this what is generally reffered to as 'over drive'. or is OD something else? i understand how the lock up works, and how it saves fuel etc., but i'm just now putting 2 and 2 together. Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted January 9, 2007 Author Share Posted January 9, 2007 Interesting question. Something I read indicated overdrive typically means the transmission output rotation speed is higher than the input rotation speed, plus a few other details. Quote Link to comment Share on other sites More sharing options...
nipper Posted January 9, 2007 Share Posted January 9, 2007 Interesting question. Something I read indicated overdrive typically means the transmission output rotation speed is higher than the input rotation speed, plus a few other details. Overdrive is what he said, thats what 4th gear is. TC lockup is now considered lock-up. Back when Lockup TC first came out it was considered overdrive. nipper Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted January 9, 2007 Share Posted January 9, 2007 i meant to ask this last month but i never got around to it. when the torque converter locks up and the rpms drop a couple of hundred , is this what is generally reffered to as 'over drive'. or is OD something else? i understand how the lock up works, and how it saves fuel etc., but i'm just now putting 2 and 2 together. Quote Link to comment Share on other sites More sharing options...
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