I am getting ready to rebuild by 340 and I am planning on running stock X heads with a 6-Pack and stock compression (around 10 to 1), I will be running a 727 auto could run a stall if need be and 3.91 posi out back on 28 inch tires. Any suggestions on camshaft selection. I am considering mechanical and hydraulic, no roller cams. I will drive this car on the street primarily.