Ok, I posted a thread in the 5.0 engine tech section about anderson cam lifter preloads. Here's the deal. Went from my normal setting of 1/2 turn preload on the lifters (because they made noise at start up) to what Rick at Anderson Motorsports recommends which is 1 full turn. I have made no other changes and the weather here as been better than normal (cooler) and the car as almost lost a tenth at the track. Has anyone ever played with lifter preloads and seen anything at the track? Does this make any sense? Would tighter lifter preload change anything else such as A/F ratios or timing settings? The car is always consistent and that has not changed it's just a tad slower in e.t. and mph. Rick said it should of made more rpm and power up top. Any thoughts?????