Holley EFI 4500 Intake Manifold - BBC - Rectangle Port Lightweight Carbon Fiberglass Composite measured from the gasket flange

measured from the gasket flange to the top of the supplied retaining nut

Torrington thrust bearings reduce friction between the block and cam sprocket

pipe diameters

125" wheel

GM LS-Series Throttle Body to Square Bore Mounting Flange

Holley EFI 4500 Intake Manifold - BBC - Rectangle Port Lightweight Carbon Fiberglass Composite measured from the gasket flangeHolley EFI is excited to launch four new multi point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal for converting your big block high performance or racing engine from carburetion to fuel injection. These intake manifolds were computer designed and dyno proven to produce more horse power and torque than