98-02 LS1 Holley Aluminum Intake Manifold


Model Number: 300-111

The cast aluminum design is more durable than the factory composite. “Boost” or “spray,” the 300-111 can handle the added stress of forced induction and nitrous injection. It contains extra material for flow modifications (hand, CNC, or Extrude Hone”) to feed hungry modified LS1 engines. The aluminum manifold’s thicker walls can also be machined for NOS fogger nozzles or other modifications.


– Idle – 6200 RPM power band.

– Cast aluminum design.

– Satin finish (manifold can be polished).

– Extra material allows for flow modifications.

– Thick aluminum walls can be machined for NOS?.

– Underside panel is removed to facilitate access to runners for application specific modifications.


Manifold weighs 24 lbs.
Flange-to-logo pad height is 6.5″.
Port size: 2.61″ height; 1.09″ width.

Weight 1 oz


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SKU: 300-111 Category: