Do i need injectors

[dustang90]

First thing, how big is the lift on the cam, if it is too big it will stall out. Just porting and polishing the heads and intake won't help with a big cam. Are they stock heads or aftermarket, and same ? with the intake. To get the most out of a big cam, you need high flowing heads and intake, AND you need bigger fuel injectors WITH a calibrated mass-air AND a bigger fuel pump AND an adjustable fuel pressure regulator. ALWAYS if you are going with a big cam, make sure you have heads and intake and all that other stuff to make sure enough air and gas go into the motor.