Holley Hi-Ram EFI Intake Manifold Kit - Big Block Chevy 300-963
Hi-Ram intake manifold with 105mm LS GenIV type throttle body flange type plenum top. A -10AN fuel rail kit is included.
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:
- 2.40” tall x 1.60” wide port flange openings, uses Mr. Gasket intake manifold gasket #5817
- Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish
- Throttle Cable Bracket is supplied in the kit
- Plenum Top Gasket Type – 3/32” Round O-ring Cord
- Power Band: 1500-8000 RPM
- Requires the use of early type GM or small cap MSD or Holley Distributors. Not compatible with HEI distributors
- Uses drive by wire or cable actuated GM Gen IV LS 4-bolt throttle bodies
- Black anodized EFI fuel rails are machined for -10AN O-ring fittings and come included with these EFI Hi-Ram kits.
- The coolant outlet is a standard Chevy thermostat housing flange. and (2) 1/2 NPT and (1) 3/8 NPT coolant ports are provided.
- 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.
- 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
- 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
| Basic Operating RPM Range | 1500-8000 RPM |
|---|---|
| Brand | Holley |
| Carburetor Flange | N/A |
| Carburetor Quantity | N/A |
| Carburetor Studs Included | No |
| Category | Intake Manifolds |
| CNC Ported | No |
| Color | Natural |
| Construction | Cast |
| Cylinder Head Port Shape | Rectangle |
| Deck Height | 9.8 IN |
| EGR Port | No |
| Emission Code | 3 |
| Engine | Chevy Big Block V8 |
| Flange Style | N/A |
| 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 |
| Part Type | Engine Intake Manifold |
| Plenum Finish | Natural |
| Product Type | Intake Manifold |
| Removable Runners | No |
| Removable Top/Lid | Yes |
| Single Or Dual Plane Type | Single Plane |
| Throttle Body Bore Diameter | 105 |
| Throttle Body Gasket Included | Yes |
| Throttle Body Included | No |
| Throttle Bore | 105 |
| Vacuum Ports | Yes |
| Warranty | Manufacturer's Limited 90 Day Warranty |
| UPC | 090127963494 |
| Part Number | 300-963 |
