Tunnel Ram Power With Holleys Hi-Ram EFI Intake Manifold For 396–502 Big Block Chevy Engines @HolleyPerformance
Tunnel Ram Power With Holleys Hi-Ram EFI Intake Manifold For 396–502 Big Block Chevy Engines @HolleyPerformance
Uploaded March 2026 | Updated September 2026, 3 weeks ago
Holley delivers what Big Block Chevy fans have been waiting for—the all-new Big Block Chevy Hi-Ram EFI intake. Built for 396–502+ cubic inch BBC V8s with rectangle-port heads, this tunnel-ram-style manifold is designed to make serious horsepower while keeping things streetable and budget-friendly.

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holley.com/products/engine/intake_manifolds/efi_intake_manifolds/cast/hi-ram/parts/300-963

holley.com/products/engine/intake_manifolds/efi_intake_manifolds/cast/hi-ram/parts/300-945

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Tunnel Ram Power With Holley's Hi-Ram EFI Intake Manifold For 396–502 Big Block Chevy Engines

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