[PONTIAC DUDE]

#1: Make sure you have plenty of retainer to guide clearance.

If you can isolate the rocvker. Take it out and elongate the stud hole towards the valve and repalce .If it goes away the cam lift is binding the rocker and stud.

You did change the springs right?

[P@blo]

Dude,
What sort of retainer to guide clearance should I be looking for? The springs are Crower 68404's (shimmed to 1.605" with coil bind at 1.00") but the rocker arm kit was a Melling part number mrk-434 and can't find much info on them. Also, would there be a tell or witness mark on the stud if it is binding?

[P@blo]

Is anyone else having trouble hearing the audio in the video link I posted? Three people so far have said that there's no sound so maybe I'll try and just post the audio.

[PONTIAC DUDE]

Originally Posted by P@blo

Dude,
What sort of retainer to guide clearance should I be looking for? The springs are Crower 68404's (shimmed to 1.605" with coil bind at 1.00") but the rocker arm kit was a Melling part number mrk-434 and can't find much info on them. Also, would there be a tell or witness mark on the stud if it is binding?

I install the retainer and keepers less springs. Then measure the distance to the guide top with calipers. Allow for seal too. Should be at least .060 more.

If it is just touching you might not see marks. But you can elongate the holes towards the valve stem in the roker for safety sake. about 1/16" to 1/8" is fine. Also make sure each rocker is centered. I have had to adjust many a guideplate/pushrod hole to get the rocker centered on the valve tip.