Holley LS1 Single Plane Intake Manifold LS1 / LS2 / LS3

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  • $288.95
  • Regular price $311.95
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Carbureted single plane intake manifold. Fits all GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.


  • 2500-7000 RPM power band
  • 4150 Square bore carb mounting flange (accepts up to 1.75" diameter throttle bores)
  • Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
  • Minimum carb flange height - fits in vehicles with minimum hood modifications
  • Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications
  • Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality
  • Weight - 11.5 lbs.
  • Height (front) - 4.95" to the lifter valley cover flange at the engine block front flange
  • Port size - 2.659" height x .918" wide
  • Includes Viton® intake to cylinder head O-ring gaskets - Viton® is a registered trademark of DuPont Performance Elastomers
Barrels 4
Brand Holley
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Satin
Flange Style 4150 Square Bore
Front Height 4.95 inch
Fuel System Type Carb
Manifold Type Single Plane
Product Type Manifold
Rear Height 4.95 inch
RPM Power Band 2500-7000
Warranty Limited 90 Day
Part Number 300-132