I found a Blox stage three camshaft for cheap a friend of mine has. What will I have to replace besides just the cam. Does the timing gear have to change? and will it effect v-tec?

 

it will affect everything. without a proper tune, your car will run poorly. at minimum, youre gonna have to change to some stronger "dual" valvesprings. theres no way stock valve springs will hold up. while the head is apart, you might as well have it worked too.