hi, this thread is old, but i'm very interested. recently built a 302 that has given me nothing but fits with valvetrain noise. i have used 3 different pushrod lengths, shims galore, roller rockers, nothing....the only thing i could think of was having the lifters installed incorrectly.
now, i was thinking this would be pretty hard, since it's a roller block and they only go in one way, but....
the little
oil hole....i didn't have it facing any particular way. some were out (toward intake), some were in (toward pistons).
is this the souce of my valvetrain noise?? i have great
oil pressure, but if the lifters are still somewhat starved, it would explain a great deal.
thanks for any help you more experienced builders may give...i am not a mechanic, but i play one in my driveway!