Gold Lifetime Member
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: zz427 Lifter tic
Good deal, you could pull that cover and look for anything unusual , you might even roll each valve set over , one up/one down and see if you find the loose one. Motor needs to be warm or just shut off. If you find it, tighten it up 1/8 turn first, then re-run to see if its there.
Being a roller cam, I would rule out burned cam lobe.
I am thinking its just loose. You did not say how old the set up was.
Could also be an exhaust leak? Header gasket?
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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