th-400 speedo hookup
#1
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th-400 speedo hookup
I recently converted my car from a t56 to a th-400. I was just wondering if anyone knows how to get the speedo to work. I got the wires hooked up but its way off. it says im doing like 80 when im doing around 30. Does anyone know how to fix this? Thanks
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I'm going to a 400 very soon myself, kind of wondering the same thing. As far as I know, you have to change the plastic gear in the sensor. There is some math that has to be done to find out which one you will need. Hope this helps.
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You need a GM sensor and reluctor wheel. Sensor is part # 8655315 and the reluctor is 8655291. Depending on your set-up this will get you close. You may have to adjust gear or tire size in the PCM to fine tune it.