043 casting with Angle-D 40x 32.With long reach 3/4" spark plug. Stainless steel valves. crommoly retainers,hardened keepers, dual valve springs. *Include 3 angle valve job. 60,45 and 30 degrees. *The chambers are fully shaped and the valves are completely unshrouded. That results in a less restricted   chamber. *Only shouldered silicone bronze guides are used. *My special retainers. These retainers  offer  more installed high and the keepers do not rock inside     the retainers. like some others do. *The retainers have been tested and proven, on and off the track! *The highest quality yet still light weight stainless steel valves are used. *One set of gaskets are perfectly matched to the ports. *CC's figures are FREE!! *Your motors compression figures are calculated for FREE! *Each set of heads is shimmed according to your cam & rocker specs. "Example" fk10=has .383 lift @ the cam X 1.45 rockers = .555 lift @ the valve. I would set at: .655  or .100 over total lift. This is needed to receive the maxim life and  control out of your valve train. *I will match your manifolds up-to 3" inside the manifold for FREE!! or you may purchase a pair. *Shipping + $5 box charge and tax not included. Call for more info.          To place your Order