69goat

First of all, I'd like to say hello to all the members... I'll post in the new member section if you want to say hi.

Anyways, I have had some problems lately with rocker clatter on my 1969 gto. I spoke to a gm parts dealer (who ironically recently rebuild a 66 goat) and found out that technically, it is nonadjustable and should only require torquing everything down to 20-25 ft-lbs. Well after doing just that, there was severe play still. I ended up having to add a washer and torquing to 50-55 ft-lbs to eliminate this problem... or so I thought. A few days later the chatter came back and is only increasing (I checked the setup and it didn't slip). My two thoughts are that either the lifter isn't getting enough oil and is likely getting stuck or that it is the cam. I have since done a check and am pretty positive that the cam is fine. I guess my main question is, does anyone have any suggestions on getting to the lifters and more importantly, a schematic on the engine? I'm a little on a time crunch and don't really want to wait for shipping of a manual (I already have the parts to replace the lifter). Thanks all, and hello!