big ass rocker arms. They are shaped like a Y, with each lobe on the cam pushing down two valves. Its not that uncommon. My toyota has a 12 valve 4cyl, and it uses those on the intake side.
We need more boost!
K&N CAI, GMPP exhaust w/XTC 3" d-pipe,
Ported stock exhaust manifold, B&M Shifter
Stage 2 w/2.8, DC Sport sturt brace,
Torque brace, CAB's, poly Trans mounts,
225/40/18 BFG KDW2 tires
GM drilled rotors w/Hawk Pads