Does it have solid lifters? They tend to make a racket.
There are various methods for adjusting the valves if they are hydraulic. Be sure they are hydraulic because solid lifters require gapping.
1. - Remove valve cover - start motor - just take off one at a time.
Spin the pushrod while tightening the rocker. When it finally tightens enough to stop spinning, make another 1/2 turn and you should be done.
This gets messy and be careful of the oil on the exhaust manifolds.
I recommend another way:
2. - Get a set of old valve covers and cut the top off.
Now do like #1.
I am concerned with the oil on the exhaust if you have never done before it could
catch fire if you take too long. it will smoke a lot as well. See if you can get a cheap set of covers and cut off the top to allow access to the rockers. This will hold the oil in.
You can also adjust the valves cold but it involves marking the damper and rotating the motor by hand to bring the Pistons to TDC on the compression stroke.
Lot of work and I think the other method would work for you better.
Try to read as much as you can and do searches for things. You tube has how to videos that help a lot......... Print Dad
Hello ragtop 429,IMO, this is bad (and dangerous) advice. there is NO NEED to adjust hydraulic lifters with the engine running. Also, you do not have to "mark" the damper. You simply start with the #1 cylinder at TDC (end of compression stroke and at 0 deg on damper) and go through all of the cylinders. And you dont tighten the rocker nut down until the pushrod "stops spinning". All you want to do is take the lash out, then a 1/2 turn.
Hello fastbackmike,Thank you very much! thats what Iwant to know.I have seen the old valve cover trick before.