To me...gore isn't scary at all. But how it's procured is. Look at the Saw movies. Some of the traps (like the swinging pendulum) seemed really over the top and just wanted to throw blood and guts at the screen....but that pit of needles? Or that massive device which rotates your limbs a full 360? That's creepy. But true horror to me will always be the subtle stuff. The atmosphere, where you actually don't see anything. Somewhat like the Paranormal Ativity monster...only more than a one trick pony. After the first time it grabbed someone, it stopped being surprising and scary. But the build-up was good. Same with the first Dead Space, or Silent Hill 2. Or Amnesia.
But the new Evil Dead, with the exception of the tree rape thing (Because that was just fucked up, even in the orignal, without being overly violent (As non-violent as rape goes...)) looks incredibly dull. The original was alright, but I never considered it scary, probably because I saw it a decade or two after it first came out, as well as already having seen a tonne of horror movies (Good ones, at that). The remake looks so over the top. One can only hope they make sequels and the sequels follow the same style as the original series (From horror film to outright BOOMSTICK!).
So...in summery...gore is not scary. To me.