Where your main intake hose connects to the top of the engine from the air filter box. That is called your upper intake manifold. The injectors are under there. I have removed the upper intake many times because of having to replace injectors on those style trucks. The Oem injectors from the factory are crap.
No
NO. And it won't work in the place of the 97 350 vortec.
If it is a 1996 or newer then it has 8 injectors, 1 per cylinder. If it is older then a 96 then it has 2 injectors. TBI.
NO... Not even close.
no
Yes, They will bolt right up.
yes, they will but because of the larger displacement of the 350 its going to go lean. If you are using a multiport injection system the 305 utilized 19lb/hr injectors where as the 350's used 22lb/hr injectors. If you change out the injectors you also have to make adjustments in the computer to match. You might be able to get away with bumping the fuel pressure up to get a little more out of the 19lb/hr injectors. But it is still not a good idea.
Yes it is.
how much torque for a Chevy Z71 350 vortec engine valve cover
No not even close.
YES, There the same. NO DIFFERENCE.
To loosen:counter-clockwise.