Holley EFI is excited to launch four new multi-point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal for converting your big block high performance or racing engine from carburetion to fuel injection. These intake manifolds were computer designed and dyno proven to produce more horse power and torque than other EFI manifolds. Each manifold package includes anodized and laser etched fuel rails, and two sets of mounting brackets (brackets allow use of 1.48" or 2.56" O-ring to O-ring injector lengths).

Features:

  • Open plenum/single plane design
  • No EGR provisions
  • 3000-7500 RPM power band
  • 4150 carburetor mounting flange
  • Includes fuel rails and mounting brackets
  • Designed for today's larger cubic inch big block Chevy race engines
  • Perfect for hard core drag racers in the NHRA Super Comp, Super Gas, and Street classes as well as IHRA Quick Rod, Super Rod, and Hot Rod categories
  • Oval Port Dimensions: 1.87” High x 1.60” Wide
  • Height: Front 5.96", Rear 5.96"

Specs

Basic Operating RPM Range 3000-7500 RPM
Brand Holley EFI
Carburetor Flange Square/4150
Carburetor Studs Included No
Category Engine
Color Natural
Construction Cast
Cylinder Head Port Shape Oval
EGR Port No
Emission Code 3
Engine Chevy Big Block V8
Fuel Injectors Included No
Fuel Rail(s) Included Yes
Gasket Or Seal Included No
Grade Type Performance
Intake Port Gasket(s) Included No
Manifold Type High Rise
Material Aluminum
Nitrous Bung(s) Included No
Part Type Engine Intake Manifold
Plenum Finish Natural
Product Type EFI Intake Manifold
Removable Runners No
RPM Power Band 3000-7500
Single Or Dual Plane Type Single Plane
Sub Category Cylinder Block Components
Throttle Body Included No
Warranty Manufacturer's Limited 90 Day Warranty
UPC 090127716489
Part Number 300-561
SKU 300-561
Barcode # 90127716489
Brand Holley EFI
Shipping Weight 8.8400kg
Shipping Width 0.320m
Shipping Height 0.320m
Shipping Length 0.620m

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