Search results for query: *

If the head and/or block has been milled, shims need to be used to restore stock rocker arm geometry. Some might say that installing a shorter push rod will take care of the problem. The issue is that there are oil grooves in the rocker shaft that will not engage the rocker arm properly thus...

Pretty sure these are cast iron; Indy Cylinder Head's LA-X and MA-X. These are aluminum: http://www.moparmusclemagazine.com/techarticles/engine/mopp_1303_cylinder_heads_light_headed/viewall.html