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Return to Parts List Category : A- Small Block "LA" : Rocker Arms & Accessories HUG 1600 S.B. MODIFIED ROCKER SHAFTS (STNDRD HD) SHAFT WITH MACHINED, SLOTTED GROOVES FOR IMPROVED OILING .875" DIAMET $159.60   Part number is for a pair of rocker arm shafts w/ banana grooves for LA Small Blocks.   We now have our new design rocker shafts available for both small block and big block applications. Our proprietary oil delivery system improves the efficiency of chryslers interrupted oil supply to the rocker arms. Our new oiling system is the first improvement in shaft rocker systms in over 50 years. These shafts are hardened to 48-52 rc and finish ground to increase the life and durability of the shafts and rockers. These shafts feature  chamfered oil holes to spread the oil better in the concentrated pressure areas and calibrated hold down holes to better supply oil to the critical areas. Not for use with needle bearing rockers (Do people still use those?). Buy the good ones before the Chinese copy them wrong and screw up your engine! Naturally these work best and live longest with our rocker arms on them.