Tempest455-
One of the things I have found with excessive valvetrain noise are the rocker arms themselves. 9 times out of 10 I have found that from alot of abuse on a roller rocker arm, wether alot of street miles or alot of passes with aggressive solid roller cams is that the bearings in the rocker arm body are worn. Pull the rockers one by one and hold the rocker firmly in your hand and try to move the bearing assembly up and down in the rocker.Alot of times excessive wear will create alot of valvetrain noise, even though the lash is not too loose.
On a side note, the roller cam you speak of, the HI-TORQUE 440 lobe from Comp. is an extremely aggressive cam. I would be careful useing this camshaft in the factory blocks, as they will blow out the lifter bores very quickly. I have seen them break even with the lifter bore braces.
Joe Pontiac
Maximum Race Engines
www.maximumraceengines.com
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