351W is a different engine family with a different mechanical pump mounting pattern
making the mount a strong choice for racing
It's not a direct replacement unless all specifications genuinely match your current fuel system
7 L / 350 in³ commonly referred to as Vortec 5700 L31
Chevrolet/Pontiac Gen II LT1 & LT4 5
Chevy Big Block Short Ball Milled Polished Aluminum Valve Covers Rocker Arms 351W is a different engineChevy Big Block Short Ball Milled Polished Aluminum Valve Covers for Sealing, Clearance, and Engine Bay Detail These Chevrolet Big Block valve covers are built around the details buyers search for most: fitment, valve cover height, material, finish, ventilation, and sealing. The 2" profile, perimeter bolt mounting style, and ball milled top style help match the cover to the correct engine build and clearance requirements. Aluminum construction with a