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Holley Performance Holley Hi-Ram Lower Manifold 300-122


Cathedral Port EFI For 1 x 92mm Throttle Body - Hi-Ram Manifold - Front/Rear 8.42 in. - RPM Power Band 1500-7000 - Satin Finish

Pricing: $705.95


Holley Performance - Holley Hi-Ram Lower Manifold P/N 300-122 Features:

  • Base Plenum Top Mtg Flange Ht 8.42in. Lifter Valley Cvr Flange
  • Total Height 12.32 in. To The Lifter Valley Cover Flange
  • Port Size 2.49 in. Height 1.21 in. Wide
  • Mounting Flange Gasket Type Standard LS3 Molded O-Ring
  • Plenum Top Gasket Type 3/32 in. Round O-Ring Cord
  • Throttle Body Flange Location w/92/102mm EFI
  • Runner Length 6.50 in. As-Cast
  • Plenum Top: Height 8.42 in.
  • Longitudinal Location 3.84 in.

Product Documents:


Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holley's products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition.


  • 300-122
  • 300-122
  • 090127681671
  • Holley Performance
  • New

Shipping Information

  • Item Requires Shipping
  • 35.0 lbs.
  • W14.7500” x H13.0000” x L24.0000”

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