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Product Summary

262, 267, 283, 305, 307, 327, 350, 377, 383, 400

  • Dual-plane, 180° design provides good throttle response and low-speed torque
  • High-rise plenum improves approach angle into the heads, increasing top end without sacrificing bottom end
  • Open gap design keeps air/fuel charge cool, eliminates exhaust crossover plenum heat box
  • Partially machined plenum divider wall improves top end power by allowing both cylinder banks to draw from all 4 barrels of the carburetor
  • 1500-6500 RPM power band, with comparable horsepower to a single plane intake in that range (with significantly more torque)

Key Specs

MFG. Part #
BrandSpeedway Motors
Intake Manifold TypeDual Plane
Material TypeAluminum

Need To Know

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Details

The Speedway Motors Eliminator Manifold has all the same great features as the Qualifier Manifolds, but with the addition of an open space underneath the plenum chamber. The gap underneath allows for a cooler air charge coming into the motor that results in a jump in performance and power. This style of intake manifold has become very popular over the years, as they are a proven design that puts the power to the ground! The Eliminator series is set up to run a standard square bore carb, as well as featuring nitrous bosses, four corner water ports and dual distributor tie downs. When looking for additional power, without sacrificing the streetability of your ride, look no further than the Eliminator Manifolds from Speedway Motors!

  • Dual-plane, 180° design provides good throttle response and low-speed torque
  • High-rise plenum improves approach angle into the heads, increasing top end without sacrificing bottom end
  • Open gap design keeps air/fuel charge cool, eliminates exhaust crossover plenum heat box
  • Partially machined plenum divider wall improves top end power by allowing both cylinder banks to draw from all 4 barrels of the carburetor
  • 1500-6500 RPM power band, with comparable horsepower to a single plane intake in that range (with significantly more torque)
  • 5.160" x 5.625" "square bore" flange works with typical Holley 4150/4160 and Edelbrock Performer-style carbs
  • Textured plenum floor keeps fuel droplets in suspension during the transition into runners, improving mixture quality
  • 4-corner 1/2"-14 NPT coolant ports for flexibility in mounting temp senders or racing-style rear coolant hoses to prevent hot spots
  • Features 3/8"-18 NPT vacuum port, standard 5/16"-18 carburetor mounting holes, and 3/8"-16 distributor clamp mounting holes
  • Dual distributor hold-downs make it easy to adjust timing from either side of the engine

Fits 1955-86 SBC engines and will also work with later 1987-95 SBC cylinder heads using the supplied adapter bushings for the center 4 mounting holes (which are drilled at a different angle on those heads).

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Specifications

KEY SPECS
MFG. Part #
BrandSpeedway Motors
Intake Manifold TypeDual Plane
Material TypeAluminum
GENERAL
Fuel System TypeCarbureted
Carburetor QuantityOne
Carburetor Flange Type4-Barrel Square Bore
Finish
ColorNatural
Hardware IncludedNo
Gaskets IncludedNo
Port Height2"
Port Width1.25"
Bolt Hole Pattern5.160" x 5.625"
Sold in QuantityEach