[STEELCITYFIREBIRD]

While your in there, take each rocker and check for a problem...rough spot in each pivot and roller tip.
You really want to check for lifters to be loose in their bore... as well as tight.

You can check for excessive bleed down on each lifter by leaning on the pushrod end of the rocker @ idle (a hammer handle works nicely) , being that the valvetrain noise goes away with increased RPM...(oil pressure), I believe this is where the noise is sourcing from. You got an oil mess already to clean up.

What rear gear does your car have?
Is the noise there when the engine is cold??

[glhs#116]

Originally Posted by STEELCITYFIREBIRD

While your in there, take each rocker and check for a problem...rough spot in each pivot and roller tip.
You really want to check for lifters to be loose in their bore... as well as tight.

You can check for excessive bleed down on each lifter by leaning on the pushrod end of the rocker @ idle (a hammer handle works nicely) , being that the valvetrain noise goes away with increased RPM...(oil pressure), I believe this is where the noise is sourcing from. You got an oil mess already to clean up.

What rear gear does your car have?
Is the noise there when the engine is cold??

Lifters are all good slip fit in their bores. None sticky or loose. The noise isn’t there on a cold start until a minute or so runtime (warmup is quick in this climate). Rear is a 3.42 and converter is fairly tight which is how I want it. I am also kind of wondering if one of the rockers isn’t noisy. They all feel nice and free in the hand. But the other thing that is true about when I put in the double springs and the tick went away is that the valve tip was below the retainer and the rocker arms either side of the roller tip axles were contacting the retainers lightly. It might have been this unloading of the roller tip rather than the actual spring change that made the tick go away before. I will get some 1.65 rockers when I can afford them and see what happens. These heads look like they have the pushrod clearance for it..

Sam