340 camshaft

I run 11.80 at 116 with a solid flat tappet. A roller is not a trivial choice and really is for a serious effort motor. It necessitates more attention and money in valve train to get the performance potential out of the roller. Also the retro lifters can create oiling issues that can only reliably be addressed by bushing the lifter bores or tubing the galley. If you are pursuing that last hp. Ok. I don’t believe that is your goal. No hydraulics for me. The benefit of a hydraulic lifter is no maintenance. For the miles you are going to travel you would probably only need to check a solid once a year and that is a good chance to see how happy the motor is and catch any issues early. OOPS I always forget you may not have adjustable rockers. Sorry, still if it were me I would add adjustable rockers to the build.