Ok, maybe someone can help me with this.. When im in WOT it shifts through 1st 2nd and then in third it seems like it surges, not constantly but every 3 to 4 seconds I would say, you can feel it see it on the tach and hear it.. It doesn't feel like it is slipping more like surging.. starts at around 90 I would say.. It started recently when my 3-4 clutch went out.. I had my tranny completly rebuilt and a trans-go shift kit put in.. It didn't do it before the tranny was rebuilt and this kit was put in.. Any ideas.. Thanks everyone..

 

Try unplugging the connector on the side of the transmission and see if it still does it. It may be the torque converter trying to lockup at WOT (which it will do starting at 75 MPH depending on ECM calibration).

 

I will try that thanks but It didn't do it before and I do have a performance resource chip in it, but I put that in a long time ago... Thanks tho..