Did you break in the fresh clutch? Your symptoms point to that.AJ7734 said:I just recently had a low mileage motor put in and a new clutch setup. Everything runs good for the first 20-25 minutes I'm driving. Then....it just feels like something is slipping and no power gets to the wheels. All the gears engage perfect but you hit the gas and the engine just revs.But the only way you get any power is to rev it to 5 k in first and even then you only go 5 mph. Until it doesn't do anything.