i remember reading about let down lifters in a david vizard book. was actually going to start a post on them asking whether anyone used them, but looks like theres no need! just how noisy are they though?
would mild let down lifters also work with a cam thats 'right' for a torquey engine, to provide even more torque at low rpm? or is there a point when the lifters just decrease the breathing by being too restrictive?
lobster