Please clarify "it rolled into the head" as mentioned if it went into the upside down "U" shaped opening it won't hurt anything.. If it's one of the 70-71 vintage intakes with a sheet metal cup for the choke coil & the bolt fell into the open exhuast crossover you've got to get it out cause it can wind up in contact with the exhaust valve & from the it could pontentially wind upin a cylinder... Pull the intake & you should be able to fish it out...