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frisbee 11-15-2001, 03:12 PM Is there anyway to change the shift points on a TH400?.... I would like to move it higher in the RPM range... Right now shifting occurs around 1800 under normal driving about 3000 under hard acceleration... I would like to have it shift around 2400 and 3500...... This is my first automatic transmission I want to tinker with and my knowledge of them is ZIP, NADA, ZILCH.... orangefj45 11-15-2001, 07:48 PM there's a vacuum modulator on the passenger side of the th400. pull off the vacuum line and insert a small screw driver. twist the valve in (clockwise) 2 turns and reattach the vacuum line. now go drive the rig and see how much that changed the shift points. go from there. i would not go too high because it's rough on the trans, u-joints and everything else in line. also, your fuel milage will decrease a tiny bit and so on. enjoy! ;) woops! i almost forgot. hey newbie::flipoff2: ! frisbee 11-16-2001, 05:53 PM Oh MY!!!!!!!!! :eek: .......:D Hey, I've been welcomed to the board :bounce: Thanks for the info 45.....I'll give it a try...I look forward to getting more info from this board Back at ya :flipoff2: orangefj45 11-19-2001, 08:09 PM and i'll be looking forward to throwing you the bird again for your next question! glad i could help. now get to wrenchin' , newbie! ;) | |