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 in. 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. 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.
Specifications:
| Description_ASC |
Modification to the valve covers may be required when this manifold is used with some types of cylinder heads. |
| Description_DEF |
Engine Intake Manifold |
| Description_DES |
Holley Single Plane Intake Manifold- Chevy Small Block V8 |
| Description_FAB |
Single Plane with Isolated Plenum |
| Description_FAB |
Square Bore Carburetor Mounting Flange |
| Description_FAB |
Isolated Water cross-over |
| Description_FAB |
Power band: 2500-7500 RPM |
| Description_FAB |
Height: Front 4.18", Rear 5.28" |
| Description_FAB |
Port Size: 1.92" height 1.20" width |
| Description_EXT |
Single Plane Intake Manifold Kit; Upper; Square Bore Carb Mounting Flange; 2500-7500 RPM; Front 4.18 in./Rear 5.28 in. Height; 1.92 in. H/1.20 in. Wi Port Size; |
| Description_INV |
SBC CARB SINGLE PLANE INTAKE MANIFLD KIT |
| Description_SHO |
Intake Manifold |
| 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 in. 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. 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. |
| Finish |
Satin |
| Engine Make/Size |
Chevy Small Block V8 |
| Rear Height |
5.280 in. |
| Emission |
N/A |
| Position |
Upper |
| Product Type |
Intake Manifold |
| Warranty |
Limited 90 Day |
| Color |
Natural |
| RPM Range |
2500-7500 |
| Barrels |
4 |
| WARNING CA Proposition 65 |
No |
| Barrel |
Four |
| Construction |
Cast |
| Fuel System Type |
Carb |
| RPM Power Band |
2500-7500 RPM |
| Number of Carbs |
One |
| Manifold Type |
High Rise |
| Front Height |
4.180 in. |
| Brand |
Holley |
| Emission Code |
3 |
| Engine |
Chevrolet Small Block Gen I |
| Usage |
Racing |
| Cylinder Head Type |
Standard |
| Length |
8.0000 |
| Width |
12.0000 |
| Height |
25.0000 |
| Weight |
13.0000 |
