Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - plugged vacuum modulator T-400
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Old 10-24-2012, 03:06 PM
0trbo4myCHEVUICK 0trbo4myCHEVUICK is online now
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been reading stuff online about "boost valve" modifications for full manual shift th400's and how you use a plug for the vac mod spot. which mine had a plug. I hope this trans is designed to shift on its own in the first place. It doesent seem like the vac mod valve is sticking out of the trans enough to make contact with the modulator
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