In this video I do some work to a pulling cylinder head for a Big Block Deere. These pose a bit of a challenge to modify cheaply because they use 7/16" valve stems so without doing guides it is pretty well stuck to stock valves. So I change the angles do some porting and make the best I can out of the stock parts with some better valve springs it should live happy life of 3000rpm pulling.
28 апр 2024