Description

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.

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.

Features

  • Single Plane with Isolated Plenum
  • Square Bore Carburetor Mounting Flange
  • Isolated Water cross-over
  • Power band: 2500-7500 RPM
  • Height: Front 4.18", Rear 5.28"
  • Port Size: 1.92” height 1.20" width

Specifications

Barrels4
Basic Operating RPM Range2500-7500
BrandHolley
Carburetor Studs IncludedNo
Category FilterIntake Manifolds
Clearance CategoryIntake Manifolds
ColourNatural
ConstructionCast
EGR PortNo
Emission Code3
EngineChevrolet Small Block Gen I
FinishSatin
Front Height4.18"
Front Maximum Height4.18
Fuel Injectors IncludedNo
Fuel Rail(s) IncludedNo
Fuel System TypeCarb
Gasket Or Seal IncludedNo
Grade TypePerformance
Intake Port Gasket(s) IncludedNo
Manifold TypeHigh Rise
MaterialAluminum
Nitrous Bung(s) IncludedNo
Plenum FinishNatural
Product TypeIntake Manifold
Rear Height5.28"
Rear Maximum Height5.28
Removable RunnersNo
RPM Power Band2500-7500 RPM
Sale CategoryAir and Fuel Delivery
Single Or Dual Plane TypeSingle Plane
Throttle Body IncludedNo
WarrantyLimited 90 Day

Compatibility

  • Universal Part

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.

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.

Features

  • Single Plane with Isolated Plenum
  • Square Bore Carburetor Mounting Flange
  • Isolated Water cross-over
  • Power band: 2500-7500 RPM
  • Height: Front 4.18", Rear 5.28"
  • Port Size: 1.92” height 1.20" width
Barrels4
Basic Operating RPM Range2500-7500
BrandHolley
Carburetor Studs IncludedNo
Category FilterIntake Manifolds
Clearance CategoryIntake Manifolds
ColourNatural
ConstructionCast
EGR PortNo
Emission Code3
EngineChevrolet Small Block Gen I
FinishSatin
Front Height4.18"
Front Maximum Height4.18
Fuel Injectors IncludedNo
Fuel Rail(s) IncludedNo
Fuel System TypeCarb
Gasket Or Seal IncludedNo
Grade TypePerformance
Intake Port Gasket(s) IncludedNo
Manifold TypeHigh Rise
MaterialAluminum
Nitrous Bung(s) IncludedNo
Plenum FinishNatural
Product TypeIntake Manifold
Rear Height5.28"
Rear Maximum Height5.28
Removable RunnersNo
RPM Power Band2500-7500 RPM
Sale CategoryAir and Fuel Delivery
Single Or Dual Plane TypeSingle Plane
Throttle Body IncludedNo
WarrantyLimited 90 Day
  • Universal Part

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