Hi-Ram Base, Big Block Chevy Hi-Ram EFI Base for 1965 & Later 396-502+ MKIV-MKVI Big Block Chevy Engines with Standard Intake Flange Rectangle-Port Cylinder Heads Holley

Holley Hi-Ram EFI intake manifolds are now available for 1965 & later 396-502+ Mkiv-Mkvi Big Block Chevy engines with standard intake flange rectangle-port cylinder heads. Traditional Big Block Chevy engines can now also be fitted with the Holley Brand Hi-Ram type EFI intake manifolds that have so well served Gm Ls & Lt, Gen 3 Hemi, Sbf Ford, and Ford Coyote engine platforms.

The iconic Chevy Sbc & Bbc platforms are primed for 21st century induction systems, Holley EFI engine management, and Holley fuel systems.

Features and Benefits:

• 2.40 inch tall x 1.60 inch wide port flange openings, uses Mr
• Gasket intake manifold gasket #5817 Designed for 1965 & later 396-502+ Mkiv-Mkvi standard 9.80 inch deck height Big Block Chevy engines with standard intake flange rectangle-port cylinder heads
• Requires the use of early type Gm or small cap Msd or Holley Distributors
• Not compatible with Hei distributors Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish Power Band: 1500-8000 RPM The coolant outlet is a standard Chevy thermostat housing flange
• and (2) 1/2 NPT and (1) 3/8 NPT coolant ports are provided
• Map sensor port is for a Gm Gen Iv Ls Map sensor, manifold also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum Black anodized EFI fuel rails are machined for -10AN O-ring fittings and come included with these EFI Hi-Ram kits.

Details:

• Basic Operating RPM Range: 1500-8000 RPM
• Cnc Ported: No
• Carburetor Studs Included: No
• Color: Natural
• Construction: Cast
• Cylinder Head Port Shape: Rectangle
• Deck Height: 9.8 Inch
• Egr Port: No
• Engine: Chevy Big Block V8
• Fuel Injectors Included: No
• Fuel Rail(s) Included: Yes
• Fuel System Type: EFI
• Gasket Or Seal Included: Yes
• Grade Type: Performance
• Intake Port Gasket(s) Included: No
• Manifold Type: Hi-Ram
• Material: Aluminum
• Nitrous Bung(s) Included: No
• Plenum Finish: Natural
• Removable Runners: No
• Removable Top/Lid: Yes
• Single Or Dual Plane Type: Single Plane
• Throttle Body Gasket Included: No
• Throttle Body Included: No
• Type of Component: Lower Manifold
• Vacuum Ports: Yes
• Warranty: Manufacturer's Limited 90 Day Warranty