400 low buck dont give a

so what do you guys think ??? will i have a little bite of compression ????now i need to check the piston to valve to see what works and dont.. i hate to buy a cam and not be able to use it..even if it is cheap..lol :D:D:D:Dso step on in guys and tell me what you think on the piston and deck height deal...i am new to big blocks so i need all the help and info i can get..