Originally Posted by CHAHONDA
I KNOW HOW TO DO IT!!!
run the motor at about 2000rpm for about 10 min, then at 2500 for 10 min, then back to 1500 for about 10 min. then let it cool down and readjust the valves. that should do it.
thats how i break in my small blocks and ive never had a problem

really? i was told not to lash the valves if the head temp was over 100 degrees?