[infinitexsound]

what it is, is a secondary throttle . alot of cars have it mid way thru the intake manifold.. but on the sohc its mainly at the edge of the flange where its bolted down next to the head... takes a few minutes to take out... once u have the manifold off the head..just unscrew the plates off the rod, then slide the rod out... i highly suggest jb welding the holes and sanding it smooth... reason for this is for no vacuum leak...