SEMA 2025: Holley's Hi-Ram Intake Manifold For Classic Chevys

It’s been a long time coming for classic Chevy builders. For years, the buzz at SEMA has been about Holley’s EFI ecosystem for LS and HEMI engines, while small- and big-block owners were left out of the party. The Hi-Ram Intake Manifold, with its aggressive look and high-rpm power, was the prime example. Well, at SEMA 2025, Holley has finally answered the call, bringing that modern EFI technology to the engines that started it all: the Gen 1 SBC and MKIV BBC.

A Hi-Ram That Fits F-Bodies

The real showstopper at the Holley booth is the small-block Chevy version (300-951). Holley didn’t just cast a tall race intake; they engineered a “hood-height-friendly” front-feed variant. This is a massive win for F-body owners. It’s designed specifically to fit under the stock hoods of Gen 1, 2, and 3 Camaros and Firebirds, so builders can get that modern performance without hacking up their car for a cowl hood. The intake uses a 95mm LS-style throttle body flange and is engineered for 1955-86 small-blocks, delivering a broad 1,500-8,000 rpm powerband.

The Hi-Ram Intake Manifold and HyperSpark Solution

Of course, there’s a catch to stuffing this much plenum under a flat hood. Builders have to ditch their bulky, old-school HEI distributor. The same goes for the new big-block version (300-963), a traditional tall design for 396-502 engines. In the past, swapping to a small-cap distributor was a hassle. This is where Holley’s expanded ecosystem shines. They are now bundling this Hi-Ram Intake Manifold with their HyperSpark ignition. The HyperSpark is a modern, small-cap distributor built specifically to provide the physical clearance and the clean rpm signal that EFI needs.

Classic Muscle Meets Modern EFI

Holley is now selling a complete, engineered solution, not just a box of parts. By packaging the intake and ignition together, Holley has eliminated the guesswork and fabrication headaches that plagued these swaps. This move finally bridges the gap between classic Chevy muscle and modern performance. Builders get a cost-effective, bolt-on system that delivers the aggressive looks and the 21st-century powerband that muscle car fans crave.