
Roller rockers reduce side loading on the valve stems (reducing valve stem/guide wear). The adjustment feature allows proper centering of the hydraulic lifter piston reducing possibility of bottoming at either end of it's stroke due to temp. changes. (Very quiet at all tempratures) The detonation sensor doesn't "hear" the valve train the way it did with non-adjustable stock rockers. | 
Note the stainless shield between the manifold and the block to keep heat from the water jacket. | 
Heads are modified with hard valve seat inserts,new valve guides, thread inserts for the exhaust studs, high tensile studs,machined rocker box gasket surfaces as well as exhaust manifold surfaces for installation without gaskets for superior heat transfer etc.. Friends at the speed shop matched all ports on the flow bench and cleaned up the short radius enough to improve flow somewhat. | 
Spread bore Edelbrock induction manifold with #1905 "Q-Jet" carburetor. (not shown/no longer available.) Heat shield keeps engine compartment temp. down and manifold heat away from rocker box gasket. Gasket is hi-temp Fel-pro. |