Melling high performance oil pumps provide dependable performance every time in every application under the toughest RPM conditions. High volume performance upgrade for the 10770. Increase in volume of 25% over stock oil pump. The drive shaft has been manufactured from chrome-moly steel. The drive and idler shafts have been extended to allow for additional support in the cover. Additional support eliminates dynamic shaft deflection at increased RPM levels. The cover is doweled to the pump housing to assure alignment of the shaft bores. The relief valve has a screw-in plug instead of a pin. The housing and cover are CNC machined and phosphate coated. An additional spring, the original stock replacement is supplied which will reduce bypass pressure if needed. Includes 12770 chrome moly intermediate shaft with steel guide. Built with billet steel gears. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Product Features:25% Higher volume anti-cavitation high performance upgrade of the 10770CNC machined phosphate coated cast iron housing and coverCover has extended idler shafts for additional support at high RPM'sStandard billet steel spur gearsAdjustable pressure relief valveIncludes lower pressure spring; not installedIncludes chrome moly steel intermediate drive shaft with steel guideUses 3/4 inch diameter press-fit screen
