I have a Comp XTQ series series FT unit with Isky iron rockers upgraded by RAS and it's pretty quiet I have seen some engines with a hydraulic cam and adjustable rockers not adjusted tight enough Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
I have seen some engines with a hydraulic cam and adjustable rockers not adjusted tight enough 
