Holley’s EFI-ready intake manifolds for Chevy big block engines are perfect for hard-core drag racers looking to jump into multi-port EFI. These single-plane high-rise intakes are computer-engineered and dyno-proven to produce more horsepower and torque than ordinary EFI manifolds. Ready for use with EFI right out of the box, they include fuel rails and two sets of mounting brackets that give you the option to use either 1.48-inch or 2.26-inch injectors. They're available for standard-deck, oval-port, and rectangular-port big blocks and are compatible with 4150- or 4500-style throttle bodies. These single-plane intake manifolds are designed for high-performance engine applications with a power band from 3,500 to 8,000 rpm and easily accommodate up to 540 cubic inches. Holley EFI intake manifolds are cast with extra material at the port-flange exits to allow for custom port matching. They're designed for maximum performance applications and therefore have no EGR provisions.

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Small Block Chevy