If you install a cold air (high flow) air intake inside the passenger cabin (under dashboard passenger footwell) with tubing into the engine bay and carb. will this make an efficient intake system? Firstly the intake air will be much cleaner and colder and will prevent hydrolock when driving in the rain. It‘s something similar to a 4X4 snorkel. Has this been done?
WowI would think right off the line you would get a boost from the cold air (assuming you turned the A/C off.) I wouldn't suggest this though because it would be extremely noisy and you would need to keep your windows down.
I prefer a short ram for sound.but either is a HUGE improvment over stock
How exactly are you going to get the right amount of air flowing through the passenger cabin? Are you driving a race car with forced air induction from somewhere? If not then you are wasting your time. A cold air intake requires you to mount it low OUTSIDE the passenger compartment. The air wont be colder unless the inside of your car is below 0 and being forced to the motor with a supercharged fan. Just remember the KISS principle. Keep It Simple Stupid! I'm not saying your stupid its just a term. A 4x4 snorkel is not the same as a cold air intake. The snorkel allows you to drive your truck through mud and water that is over the level of an unmodified truck. My truck has a snorkel mounted on the roof and in theory I can drive it through water that deep without stalling. If I tried to drive it on the highway like that then I would probably loose it or get some foreign debris in it. Mount your cold air intake inside the engine compartment just above the front valence. The air going up from under your car will be more than enough.