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Happy Holiday's from Team EFI System Pro!
-23% Out Of Stock Holley EFI Intake, Chevy Big Block, Oval Port, Square Bore Flange

Welcome to a new era in race manifold technology. Weiand has raised the bar on intake manifold design through the use of industry leading Computational Fluid Dynamics software. Technology this advanced has typically only been used in the aerospace industry for aircraft design. Weiand has taken this technology and designed a new line of Track Warrior manifolds perfect for aggressive street machines and Comp/Super class big block power plants. Computer engineered and dyno proven to produce more horsepower and torque as a result of superior cylinder to cylinder distribution gives this piece the edge over the competition and ensures safe, consistent air/fuel ratios for your engine. Permanent mold castings provide weight savings of 10 to 20% over traditional sand cast pieces while maintaining uniform wall thickness for porting.

This great video gives more details:

Not Sure? Review this product documentation before you buy!

 
Installation Instructions
Holley GM BBC Single-Plane EFI Intake Manifold Kits

Intake Manifolds
Complete ManifoldYes
Fuel Rail IncludedYes
Manifold TypeHigh-Rise Intake (Single Plane)
RPM Range3000-7500
Throttle Body FlangeSingle Square Bore (4150) Throttle Body Flange (Throttle Body Not Included)
Fuel Rails
Inside Diameter5/8 Inch
General
Also IncludedTwo sets of fuel rail mounting hardware for either 1.48 or 2.56 inch tall injectors (o-ring to -oring)
ApplicationBig Block Chevy 396, 402, 427, 454, 502 with Oval Port Heads
ColorSatin Aluminum Intake with Black Anodized Fuel Rails
Emission Code3
MaterialCast Aluminum
OEM ReplacementNo
Unit of SaleEach

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Holley EFI Intake, Chevy Big Block, Oval Port, Square Bore Flange

  • Views: 7066
  • Brand: Holley
  • Product Code: 300-561
  • Availability: Out Of Stock
  • $462.00
  • $355.46
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