My were loud until I started using AMSOIL Z-Rod. Weird that an oil designed for flat tappet cams would solve that problem, but it did. Howard's HYD roller lifters BTW, I've run em hard and never had a problem. I was running Comp solids on a HYD profile in my previous engine and had a very similar failure.
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77 Trans Am, 469 w/ported E-Heads via Kauffman, matched HSD intake, Butler Performance forged rotating assembly, Comp custom hyd roller, Q-jet, Art Carr 200 4R, 3.42s, 3 inch exhaust w/Doug's cutouts, D.U.I. Ignition. 7.40 in the 8th, [email protected] in the quarter...still tuning.
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