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Weiand 8122P Street Warrior Intake Manifold 396-427ci, Peanut Port
Inspected & Documented Condition notes recorded before palletizing.
30-Day Startup Warranty Covers block, heads and internal moving components.
In Stock & Ready to Freight Engine Components

Weiand 8122P Street Warrior Intake Manifold 396-427ci, Peanut Port

Brand: Weiand
Condition: New
Regular price $459.14 Save $114.78
Sale price $344.36
Sale price ends Mon Nov 30, 11:59 PM PT
+ freight from $185.00, insured LTL, priced by delivery zone (rates)
From $529.36 delivered
  • Palletized and heavy shrink-wrapped for freight
  • LTL carrier delivery with optional liftgate service
  • Ships in 1–2 business days from Los Angeles, CA
  • Transit typically 3–14 business days, continental US
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Details & Inspection Notes

The Weiand Street Warrior intake is built for 396-427 c.i.d. big-block Chevy engines with peanut-port cylinder heads, aimed at the larger-displacement, stroker and higher-flow-head combinations that older manifold designs weren't engineered around.

Who it suits

Weiand ran the runner geometry through computational fluid dynamics modeling to even out fuel and air distribution between cylinders, with a universal dual-pattern carburetor flange that accepts both spread-bore, Quadrajet-style, and square-bore carburetors, so it isn't locked to a single carburetor type.

Construction

It's cast from permanent-mold 319 aluminum and precision CNC machined for a lighter casting with a cleaner surface finish than older manifold designs. The dual-plane, low-rise layout is built for a usable idle-to-5,500 RPM power band rather than a narrow, high-RPM-only range.

Common questions

Will this fit a stock-displacement 396? Yes, the range covers 396 to 427 c.i.d. with peanut-port heads.

Is it a single-plane or dual-plane design? Dual-plane, low-rise, built for broad torque rather than a single-plane's narrow top-end focus.

Startup & Installation Checklist

  • Inspect all external gaskets, seals, spark plugs and timing components prior to installation.
  • Refill engine oil, transmission gear oil and coolant to manufacturer-specified capacities before initial cranking.
  • Prime the lubrication system and verify ECU wiring pinouts, sensors, and ground connections.
  • Startup warranty covers internal lubricated components, cylinder heads, and engine block for 30 days from delivery.

Full terms: 30-day startup warranty · returns

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