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Holley EFI Hi-Ram Intake Manifolds 300-951 Manifolds, Hi-Ram, Throttle Body, 95mm Bore, Standard Deck, Aluminum, Natural, Chevrolet, Small Block, Each
Holley EFI Hi-Ram Intake Manifolds 300-951 Manifolds, Hi-Ram, Throttle Body, 95mm Bore, Standard Deck, Aluminum, Natural, Chevrolet, Small Block, Each
Description
IMPORTANT NOTICE: Note for Australian and European MarketsUnless otherwise stated, this product may be engineered for use in Left-Hand Drive vehicles. Steering components, pedals, shifters, linkages, instrument clusters, panhard rods/traction bars, drag links, brake boosters, brake or clutch lines, accelerator cables, heater cores, some master cylinders and adjacent parts can vary between LHD and RHD configurations. In some models compenents such as windscreen wiper arms, motors and linkages could differ in their size and orientation. Items such as floor mats & dash mats may have differences in their structure around the front row (or padding in different locations). In many cases items are identical depending on the design of the vehicle and part, but may have differing mounts, lengths or bolt patterns. Carefully review the product images and details to ensure suitability for your vehicle, or contact StreetFX support if you are unsure. Returns are not accepted for special order products.(keyword: manifolds)Note for Australian & European MarketsThis item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location. Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order products.(keyword: efi)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X StreetFX SKU hly300-951 SFX Item ID 4782993 Accounting SKU hly-300-951 Manufacturer SKU 300-951 Manufacturer UPC 090127857410 Alternative References 300-951, HLY-300-951, HOL300-951
Data: v2 - Desc: v4.2 - Upd: 2026-10-14 02:29:27
Part Type
Intake Manifolds, Fuel Injected
Specifications
Intake Manifolds, EFI Hi-Ram, Throttle Body, 95mm Bore, Standard Deck, Aluminum, Natural, Chevrolet, Small Block, Each
Holley offers EFI Hi-Ram intake manifolds for a variety of applications, including many vehicles from the 1950s, '60s, '70s, and '80s with a Chevy small block Gen I engine. Fuel rail kits are provided and have mounting for both long and short type fuel injectors. These manifolds offer the performance potential and the appearance of professionally prepared billet and fabricated racing intake manifolds at the affordable price of a cast-aluminum product. They deliver 21st century performance for the iconic small-block Chevy engine.
• Model 300-950 is of standard Hi-Ram configuration with a "top-feed" plenum and a plenum top designed to accept up to an 105mm Gen IV LS 4-bolt throttle body, including drive-by-wire throttle bodies.
• Model 300-951 is a hood-height friendly Hi-Ram variation which has a "front-feed" plenum and a forward-facing throttle body flange which accepts an up to 95mm LS 4-bolt throttle body, also, including DBW throttle bodies. It's an upgrade replacement for the Holley/Weiand Stealth-Ram intake manifold which was a popular manifold used to significantly improve the performance of 1985-92 GM 5.7L TPI fuel-injected engines. The 300-951 system installs under the OE hood for Gen 1, 2, and 3 Camaros and Firebirds. It should be compatible with most applications with a mild cowl induction hood.
• Uses drive-by-wire or cable-actuated GM Gen IV LS 4-bolt throttle bodies
• Throttle cable bracket is supplied in the kit
• GM Gen IV LS MAP sensor port. Also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum
• Power band: 1,500-8,000 rpm
• Black anodized EFI fuel rails are machined for -6 AN O-ring fittings and come included with these EFI Hi-Ram kits
• Plenum top gasket type – 3/32 in. 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
• 1.95 in. tall x 1.25 in. wide port flange openings
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 300-951 |
| Part Type | Intake Manifolds, Fuel Injected |
| Product Line | Holley EFI Hi-Ram Intake Manifolds |
| UPC | 90127857410 |
| Cylinder Head Configuration | Stock |
| Fuel Injection Style | Multi-port |
| Basic Operating RPM Range | 3,500-8,000 |
| Intake Section Included | Complete |
| Throttle Body Bore Size | 95mm |
| Engine Block Deck Height | Standard deck |
| Injectors Included | No |
| Multi-Port Fuel Rails Included | Yes |
| EGR | No |
| Aftermarket Fuel Rail Required | No |
| Throttle Body Included | No |
| Supplemental Bosses Cast-In | No |
| Supplemental Bosses Machined | No |
| Runners Included | No |
| Runners Removable | No |
| Plenum Material | Aluminum |
| Plenum Finish | Natural |
| Base Material | Aluminum |
| Base Color | Natural |
| Remanufactured | No |
| Quantity | Sold individually. |
Reference Information
| Brand Name/s | Holley |
|---|---|
| StreetFX SKU | hly300-951 |
| SFX Item ID | 4782993 |
| Supplier Item Code | 4782993 |
| Manufacturer SKU | 300-951 |
| Manufacturer UPC | 90127857410 |
| Alternative References | HOL300-951, 95mm |
Compatibility
No specific fitment data available for this part. For clarification, please contact us.
Detailed Compatibility
| Application Data | |
|---|---|
| Beginning Year | 1955 |
| Ending Year | 1957 |
| Engine Family | Chevy small block Gen I |
| Engine Size | 4.3L/265 |
| Engine Type | V8 |
| Make | CHEVROLET |
| Beginning Year | 1957 |
| Ending Year | 1967 |
| Engine Family | Chevy small block Gen I |
| Engine Size | 4.6L/283 |
| Engine Type | V8 |
| Make | CHEVROLET |
| Beginning Year | 1962 |
| Ending Year | 1969 |
| Engine Family | Chevy small block Gen I |
| Engine Size | 5.3L/327 |
| Engine Type | V8 |
| Make | CHEVROLET |
This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.
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