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The trans. was gone threw about 7500 mi. ago. when the shift kit was installed. Just seems odd that it only slips under those conditions.



It's high load on the clutch pack and it not being able to hold the torque , it may have been slipping all along and it is just getting progressively worse that now you are able to notice it .

Who built it ? either way it's not going to get better on it's own .

What fluid are you using also ?