I have finished most of the build on my coupe and decided to take it out on the expressway to get a feel as to how it would drive and perform.I got up to 55 mph.and suddendly a click,click.I reduced speed and limped back to the house.To my surprise I had a loose valve adjusting nut(roller rockers) also some smoke was coming from the driver side.I called the individual that I purchased the engine from to get the particulars on the valve adjustment and he said just torque the valves to "0" lash while running I thought the valves needed lash to perform properly.He said he did not have the cam card that came with the engine but that it was a no load type lifter.The cam is a comp cam with a full roller rocker system(scorpion).The lifters are not hydraulic.I thought you either have solid or hydraulic and adjust accordingly.I don't want to do any damage to the engine as it is a performance engine at about 450 HP. any suggestions appreciated.

Don in Austin