HOLLEY LS HI-RAM EFI MANIFOLD - BLACK GM LS1/LS2/LS6

Holley Modular Hi-Ram Intake Manifold LS1/LS2/LS6 Cathedral Port – 92mm Throttle Body – Black Ceramic Coated

Unlock serious horsepower potential with the Holley Modular Hi-Ram Intake Manifold for LS1, LS2, and LS6 cathedral port engines. Finished in a durable black ceramic coating, this high-performance intake is engineered for maximum airflow, strength, and versatility—making it ideal for naturally aspirated and forced induction LS builds.

Designed with a modular base, this Hi-Ram intake allows builders and fabricators to adapt a wide range of EFI or carbureted top configurations, making it the perfect foundation for custom induction systems. When paired with high-flow LS cathedral port cylinder heads, this intake delivers exceptional performance gains across a wide RPM range.

Built from cast aluminum for durability and consistent airflow, the Hi-Ram is optimized for engines in the 6.0L to 7.0L+ range, with peak power potential between 7,000–8,000+ RPM. Whether you’re building a drag car, street machine, or boosted setup, this intake provides race-proven performance at a cost-effective price point.

Key Features:

• Fits GM LS1, LS2, and LS6 cathedral port cylinder heads
• Designed for 1 x 92mm throttle body (compatible with 102mm tops)
• Durable black ceramic coated finish for heat resistance and aggressive styling
• Modular intake design supports EFI and carbureted configurations
• Cast aluminum construction for strength and reliability
• Ideal for naturally aspirated and forced induction applications
• Optimized runner design for improved airflow velocity and cylinder distribution
• Supports high-horsepower builds in the 6.0L–7.0L+ range
• Maximum power range: 7,000–8,000+ RPM

Fuel System & Compatibility:

• EFI fuel rails included with Hi-Ram kits
• Fuel rails machined for -8AN O-ring fittings
• High-flow internal passages reduce pressure pulsation and support high fuel demand

Specifications:

• Intake Height (with 92/102mm plenum): 12.32” (from lifter valley cover flange)
• Base Height: 8.42” (from lifter valley cover flange)
• Runner Length: 6.58”
• Runner Cross-Section: Tapered from 4.25 in² to 2.53 in²
• Port Size: 2.49” H x 1.21” W
• Throttle Body Location (92mm Top):
  • Height: 8.42”
  • Forward Position: 3.84” from engine flange
  • Angle: 25° downward from vertical
• Gasket Type (Flange): Standard LS3 molded O-ring
• Plenum Gasket: 3/32” round O-ring cord

Why Choose the Holley Hi-Ram Intake?
This modular Hi-Ram intake is built for serious performance enthusiasts who need flexibility, airflow, and durability. Its race-inspired design delivers aggressive looks and proven results across drag racing, street performance, off-road, and boosted applications.

Build your LS the right way—with a high-performance intake designed to handle anything from street cruising to all-out racing.