Motor advice please

Hello, I am a new member and have question about brushless motors. I currently have a Hot Bodies Lightning RR I converted to electric. I used a HV maxx 6.5 motor geared 44/12. It ran fine on my matched 3300 cells. I bought the Orion 4800 lipo cells and ran them only to have the controller shut down because the motor got too hot. After cooling off it ran fine.

My question is can I make this setup work or do I need a new motor and speed control? I have already made an adapter to allow the use of the 51 tooth spur gear if that helps.

If a new motor and speed control are what is needed would a Feigao 540 7xl motor with a Mamba Maxx controller work? Please advise.

I hope to convert a truggy next, a x1-crt or HB lsp and would use the same set up.

Thank you for your help.