I am not sure what this could be and while driving it does the same when I hit 70-80mph.

 

Check for any codes stored in the memory.
If there is an issue the car may be in limp mode, Tachs are not that accurate and are known to be wildly off.
Next check fuel pressure, if the pump is failing or the filter is clogged, the system may not be able to provide enough fuel and the car engine is simply starved for gas.
Check your air filter, if it is clogged the engine will not be able to breath.

 

Thank you I'll look into this. I Do Have A Couple Of Lights On THE das. One is a check engine and maintenance needed. Also when I am driving I am noting that when I put it in park reverse or drive it will jolt the car.