Hola, estoy buscando algunos sellos de válvula buenos para mi cabeza sin tener que modificar las guías originales, he visto algunos en venta "M-6571-A50" que dicen que se adapta a guías de 0.550 "hasta 0.570", pero no estoy seguro de que sea así, un poco de ayuda y si conoce algún otro sello, se agradece la ayuda.
Gracias
Hello, I am looking for some good valve seals for my head without having to modify the original guides, I have seen some for sale "M-6571-A50" that say it fits guides from 0.550 "to 0.570", but I'm not sure If so, a little help and if you know of any other seal, help is appreciated.
Thank you

i use 289/early 302 valve seals, i trim 1/16th from the skirt. have used them on 3 ys so far,and they all have the drain tubes removed,deeper groves in cam so there is lots of oil to rockers and pushrods etc. no oil consumption or smoke

Thanks for the reply, but I would like to know of any valve seal that fits without modifications