a356 aluminum and heat treated to t-6 specs our stateof-the-art manufacturing ... in rocker studs and exhaust manifold bolt holes for superior strength and ... durability hardened seats and bronze valve guides minimum 9/16 deck thickness ... fully machined valve cover rails for a more consistent gasket seal ... amc/jeep edelbrock now offers power and torque increases to owners of 1967-91 amc and ... chamber a reconfigured intake valve seat angle improves mid-to high lift ... and earlier engines with 7/16 head bolts no exhaust crossover port description ... are required description #60899 sb sb sb sb chevy chevy chevy chevy straight ... port volumes utilizes 1.60 and 2.02 valves and requires hardened pushrods #60759 ... description sb chevy street legal performer 70cc ... complete sb chevy street legal performer 64cc ...
a356 aluminum and heat treated to t-6 specs our stateof-the-art manufacturing ... in rocker studs and exhaust manifold bolt holes for superior strength and ... durability hardened seats and bronze valve guides minimum 9/16 deck thickness ... fully machined valve cover rails for a more consistent gasket seal ... rpm heads for small block ford bolt-on horsepower for ford 289 302 and 351w ... the 60229 head utilizes 1.90 intake valves to provide adequate clearance for stock ... aftermarket pistons notched for valve clearance head bolt bushings #9680 and ... #8552 head bolt kit or stock 7/16 head bolts required ... for 289-302 engines description #60259 sb ford 289-351w 60cc chamber complete sb ... ford w/2.02 intake valves 60cc chamber complete polished 602519 ... /5.8l heads for small block ford direct bolt-on heads for 1982-95 5.0l and 5.8l 351w ...