I just bought a pair of vortec heads for my syty engine ibought from a member. The heads are casting 12557113 and came out of a 2002 jimmy. There is a steel bar running across the under side of the rockers.What is this bar for?
As well, do these heads need to be rebuilt to work with a syty engine? Or are they a straight bolt on? I know I need to retap the heads and modify the lower intake. One more thing....do the valve cover have gaskets that go betwen them and the head when they are bolted up ?
thanks,
jim
As well, do these heads need to be rebuilt to work with a syty engine? Or are they a straight bolt on? I know I need to retap the heads and modify the lower intake. One more thing....do the valve cover have gaskets that go betwen them and the head when they are bolted up ?
thanks,
jim