This is a custom grind roller cam. 248/260 at .050, .672/.686 lift. Ground on a 114 lsa, 4deg advanced. My cam was 255/262 but not quite as much lift, but better flowing head, in a 355 (acts like a 250). I swear this is streetable, blowers eat camshaft. A bit spendy, but this will get you your 400+ hp number no problem with the right stuff around it and that blower.

"The first rule of overkill: You can never have too much overkill."
"Overkill is underrated."