I am building another 340 thats now .040 over 10.2 compression with scat rods and 65cc j heads with 2.02s and I bought the lunati cam after talking with them, it seemed like the way to go. I also got the springs and lifter package with comp cams 1.5 rockers. I have always ran purple shafts or racer brown cams but ran into vacuum issues with the brake booster so this cam was supposed to have decent vacuum for the brakes but perform well also. Anyone that used the 703 voodoo chime in on your thoughts please. I don't want to install this cam if it isn't up to par. My resto has power brakes and they have to stay that way. Thanks!!!