Jerry C I raced and turned wrenches on a hemi road runner and if you wanted to win and run the number week inand out, there was alot of valve adjustment and other minor adjustments depending on the track. If they had hydro roller lifters back then, I would have not burnt my hand so many times, or had the burning
oil spitting up in my face working on a hot motor. Doing carb adjustment, you had no choice. We had a couple of engine fires for hot motor, no damage done but what a pain. Checking lifters after every 50 runs and replacing the lifters and camshaft after every 200 runs, at this time 2 times a season. With todays greater custom cams with hydro lifters and not trying to turn 9,000 rpm motors are maken more power at a lower range and don't need triple valve springs and 400 lbs seat pressure. If I had the money and time, I think and believe that you can built a 7,500 rpm motor with beehive springs and get NO float. I would run a rev kit for the lifters, this would lighten up the wieght of the valve train on the rocker side. 11/32 or 8mm valve would also be done. Maybe titanium valves on the intake side only. I am running a motor with beehive spring and like the way it doesn't float at 6,000 rpm. I have a set of Edelbrocks that are tricked out with 2.25 valves and 11/32 stems intake, 11/32 stems on exhaust also. Trying to save wieght. I am trying to have this motor ready for next year R&G with a KCR custom roller cam. Looking for about 650 ft of torque and 575 hp from 498 cubes. TWM FI system 58mm throttle bodies, I will need all the air I can get from 2,700 rpm to 6,200 rpm, this will be my power range. 6,500 limiter chip. May change the gearing or trans gears to get the right setup. Will see. Rick