I'm running a XE274 comp cam & lifters (hydraulic) with Isky adjustable rocker arms & ball/cup pushrods. The cam has about 500 miles on it. I'm also running old Direct Connection "green stripe" double valve springs. I just set the valve last 3 days ago using the Direct Connection valve lash adjustment method & turned adjuster screws in 3/4 turn after "zero lash"

I've been trying to determine why I have so much noise under my valve covers. I hear these cams are noisy, but this "seems" like too much noise. It's coming from both valve covers.

I pulled one valve cover & noticed that #8 intake rocker arm is adjusted WAY "taller" than the other rockers (like the pushrod is longer). I pulled two pushrods & verified that the #8 intake pushrod is the same length as the others.


So....Is it possible for a lifter to be broken in the "pumped up" position?


70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"