I would start by disconnecting the intake piping and plugging the throttle body or tape it up. Also plug the pcv hose and vent hose. Then use a vacuum port to introduce smoke.
Holley and cobra jet manifolds drive fine without any issues you just lose some torque/ response down low. With a supercharger it will easily make up the difference very fast
Seriously doubt it. They have tried different oil filters with and without the bypass.high pressure and high volume oil pumps do seem to make a difference. If it was a lifter zddp would take care of it. If it was a lifter collapsing it would miss fire. Also I don’t know about anyone else but my...
If you are burning a lot of oil the pcv valve is not going to change that. If the pcv valve is sucking a lot of oil it is because there’s a lot of oil vapor in the engine and pcv valve is not going to change that. and the hesitation at 2k is not going to change from a pcv valve
If you’re talking about a coyote they will fit just fine. Same bolt pattern same port shape. They even use the exact same gasket kit and stud kit. It will bolt up to the head perfectly. The exhaust system might need a little modification.
You need to move the injector and coil of the bad cylinders to a good cylinder and see if the code follows. Then you will know if it is one of those. If not then a leak down test and compression test
Take some rope and run it around the pulleys like the belt. Have someone hold the tensioner then mark the rope. Take the rope out lay it straight and measure it