Vortec heads are the best production head for a SBC GM manufactured. But more and more customers are wanting the 1hp per cubic inch to a tad more. Well really they want even more power but that is just next to impossible to pull off with TBI. But if your wanting that 350hp number from your 350. You need to port on these vortec heads. I did not make these videos. I found the 3 videos that covered the basics for a good street port on vortec heads. Not necessarily the best videos for vortec head porting and if you find a series that is better then send me some links and i will check them out and may change this page. But the port works looks very similar to what I did with the project black magic truck.