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The new single plane intake manifold is designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The carburetor-mounting pad is designed to accept all stock or aftermarket square-bore carburetors with manual or electric chokes. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features, like an updated plenum divider area, a 1" shorter height than the 300-25 manifold, and a choice of two distributor clamp locations. The isolated design of the air/fuel passages helps to increase charge air density and performance.
Holley Intake Manifold 1957-1986 262ci-400ci, 1987-later with Aluminum Heads 300-261
Specifications:
| Barrels | 4 |
| Basic Operating RPM Range | 2500-7500 |
| Brand | Holley |
| Carburetor Flange | 4150 Square Bore |
| 10650 | 1 |
| 10652 | No |
| Category | Engine |
| 9063 | No |
| Color | Natural |
| 158 | Cast |
| 5337 | Rectangle |
| 6621 | 9.025 |
| 8095 | No |
| Emission Code | 3 |
| Engine | Chevrolet Small Block - 87+ Aluminum Heads |
| Flange Style | 4150 Square Bore |
| 6643 | 4.18 |
| 906 | No |
| 10644 | No |
| Fuel System Type | Carb |
| 353 | No |
| 3390 | Performance |
| 10651 | No |
| Manifold Type | High Rise |
| 10 | Aluminum |
| 10648 | No |
| part type | Engine Intake Manifold |
| Plenum Finish | Natural |
| Product Type | Intake Manifold |
| 6645 | 5.28 |
| 10645 | No |
| 10649 | No |
| 6642 | Single Plane |
| Sub Category | Cylinder Block Components |
| Throttle Body Bore Diameter | 3.6 |
| Throttle Body Gasket Included | No |
| 10626 | No |
| Vacuum Ports | Yes |
| Warning | California Proposition 65 |
| Warranty | Manufacturer's Limited 90 Day Warranty |
| Barrels | 4 |
| Basic Operating RPM Range | 2500-7500 |
| Brand | Holley |
| Carburetor Flange | 4150 Square Bore |
| 10650 | 1 |
| 10652 | No |
| Category | Engine |
| 9063 | No |
| Color | Natural |
| 158 | Cast |
| 5337 | Rectangle |
| 6621 | 9.025 |
| 8095 | No |
| Emission Code | 3 |
| Engine | Chevrolet Small Block - 87+ Aluminum Heads |
| Flange Style | 4150 Square Bore |
| 6643 | 4.18 |
| 906 | No |
| 10644 | No |
| Fuel System Type | Carb |
| 353 | No |
| 3390 | Performance |
| 10651 | No |
| Manifold Type | High Rise |
| 10 | Aluminum |
| 10648 | No |
| part type | Engine Intake Manifold |
| Plenum Finish | Natural |
| Product Type | Intake Manifold |
| 6645 | 5.28 |
| 10645 | No |
| 10649 | No |
| 6642 | Single Plane |
| Sub Category | Cylinder Block Components |
| Throttle Body Bore Diameter | 3.6 |
| Throttle Body Gasket Included | No |
| 10626 | No |
| Vacuum Ports | Yes |
| Warning | California Proposition 65 |
| Warranty | Manufacturer's Limited 90 Day Warranty |
| Description_ABR | SBC CARB SIN |
| Description_SHO | HOLLEY SINGLE PLANE |
| Description_INV | SBC CARB SINGLE PLANE INTAKE MANIFLD KIT |
| Description_ASC | Modification to the valve covers may be required when this manifold is used with some types of cylinder heads. |
| Description_DES | Holley Single Plane Intake Manifold- Chevy Small Block V8 |
| Description_EXT | Intake Manifold 1957-1986 262ci-400ci, 1987-later with Aluminum Heads |
| Description_MKT | The 300-261 intake manifolds are designed for square-bore carburetor applications on 1957-86 262-400cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). Also, these manifolds will work with any SBC engine equipped with aftermarket cylinder heads, as long as they have a standard port flange opening and mounting bolt locations. |
| Description_MKT | The new single plane intake manifold is designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The carburetor-mounting pad is designed to accept all stock or aftermarket square-bore carburetors with manual or electric chokes. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features, like an updated plenum divider area, a 1" shorter height than the 300-25 manifold, and a choice of two distributor clamp locations. The isolated design of the air/fuel passages helps to increase charge air density and performance. |
| Description_FAB | Power band: 2500-7500 RPM |
| Description_FAB | Square Bore Carburetor Mounting Flange |
| Description_FAB | Isolated Water cross-over |
| Description_FAB | Port Size: 1.92” height 1.20" width |
| Description_FAB | Height: Front 4.18", Rear 5.28" |
| Description_FAB | Single Plane with Isolated Plenum |
| Description_ABR | SBC CARB SIN |
| Description_SHO | HOLLEY SINGLE PLANE |
| Description_INV | SBC CARB SINGLE PLANE INTAKE MANIFLD KIT |
| Description_ASC | Modification to the valve covers may be required when this manifold is used with some types of cylinder heads. |
| Description_DES | Holley Single Plane Intake Manifold- Chevy Small Block V8 |
| Description_EXT | Intake Manifold 1957-1986 262ci-400ci, 1987-later with Aluminum Heads |
| Description_MKT | The 300-261 intake manifolds are designed for square-bore carburetor applications on 1957-86 262-400cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). Also, these manifolds will work with any SBC engine equipped with aftermarket cylinder heads, as long as they have a standard port flange opening and mounting bolt locations. |
| Description_MKT | The new single plane intake manifold is designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The carburetor-mounting pad is designed to accept all stock or aftermarket square-bore carburetors with manual or electric chokes. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features, like an updated plenum divider area, a 1" shorter height than the 300-25 manifold, and a choice of two distributor clamp locations. The isolated design of the air/fuel passages helps to increase charge air density and performance. |
| Description_FAB | Power band: 2500-7500 RPM |
| Description_FAB | Square Bore Carburetor Mounting Flange |
| Description_FAB | Isolated Water cross-over |
| Description_FAB | Port Size: 1.92” height 1.20" width |
| Description_FAB | Height: Front 4.18", Rear 5.28" |
| Description_FAB | Single Plane with Isolated Plenum |