The W-31 cam was used in the '68 H/O 455 non-air cars. With the addition of the 100 extra cubes, it mellows the cam enough to have power brakes. I do follow what Casey is saying with the carb. What revs are you running when the surging occurs? Just trying to think if the carb may need an overhaul and get some gum cleaned out?
Mr. Hand is also a memeber of this board.
