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.

COMES WITH THE 2X4 BARREL TOP- WE DO NOT GIVE A CREDIT OR DISCOUNT FOR NOT NEEDING IT SAME W FUEL RAILS.

CAN BE PLUGGED UP IF JUST USING IT AS A BLOWER MANIFOLD

9.8" DECK HEIGHT ONLY WE DO SELL TALL DECK SPACER KIT TO INSTALL ON A 10.2"

Features:

• The Big Block Chevy Hi-Ram manifold is available in either a traditional Hi-Ram 105mm plenum top or with a 2 x 4150 4-barrel throttle body plenum top options
• Hi-Ram intake manifolds are a cost-effective alternative to fabricated sheet-metal or billet manifolds for high-performance applications where induction system height is not limited
• 300-961, 300-963, and 300-964 are designed for 1965 & later 396-502+ MKIV-MKVI standard 9.80” deck height Big Block Chevy engines with standard intake flange rectangle-port cylinder heads.
• Uses drive by wire or cable actuated GM Gen IV LS 4-bolt throttle bodies
• 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
• The coolant outlet is a standard Chevy thermostat housing flange. and (2) 1/2 NPT and (1) 3/8 NPT coolant ports are provided.
• Power Band: 1500-8000 RPM
• Black anodized EFI fuel rails are machined for -10AN O-ring fittings and come included with these EFI Hi-Ram kits.
• Plenum Top Gasket Type – 3/32” Round O-ring Cord
• Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish
• Requires the use of early type GM or small cap MSD or Holley Distributors. Not compatible with HEI distributors
• 2.40” tall x 1.60” wide port flange openings, uses Mr. Gasket intake manifold gasket #5817  OR 1275 FEL PRO 
• Throttle Cable Bracket is supplied in the kit

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

• 1965 and older U.S. manufactured California Certified vehicles
• 1967 and older U.S. manufactured Federally Certified vehicles
• 1967 and older Foreign manufactured vehicle

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

• 1966 and newer U.S. manufactured California Certified vehicles
• 1968 and newer U.S. manufactured Federally Certified vehicles
• 1968 and newer Foreign manufactured vehicle