Hi,

I had and still a have more noise from the left rear of my valve train. It was much louder until I swapped to a new set of lifters,but theres still is a bit of noise which I think is normal-comparing to other 440's. I know its a pain but try like the other guy said to locate the area where its coming. Then remove the valve cover and bump the motor over(no-mess)and push on various rockers to see if one or two lifters feel spongy compared to the others.Does the noise lessen at RPM if so it may be a lifter.I have seen them(brand new) that were put together wrong and wouldnt pump up.Although rare it does happen.If your lucky and its the right lifter sometimes you can get them out without removing the intake,it all depends on the heads casting.if your still running iron heads that is.by the way nice ride!Good luck-Gary