ticking lifter???

hey fella's.. I've had my TA for about 5 or so years, its just a sunday car now, as I have a truck. Well, the motor has always had a slight tick... it's a 350 chevy. One of the rocker arms sits crooked from the valve
spring to the pushrod. If I tighten it down some, the tick subsudes a little. I have reaplced the rocker and the pushrod, and still it is the same. is this the lifter's fault? and to change that, all the I need to do to get to it is take the intake off? could it be the spring?
thanks guys.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.