billet refers to metal, i think its the process of how its made like cast/forged when refering to crankshafts, but not for certain. Billet steel parts are supposed to be strong and shiney, but also expensive.
My question of the day is what is a rat motor? I hear people refer to some chevy engines as rat motors? what does this mean is it refering to budget like ratrod? Or does it have something to do with the stroke of the motor? like de-stroking for more RPM's or something? help me out guys(gals).