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Holley Hi-Ram Lower Manifold (GM LS1, LS6 & LS2)

$807.95

REVIEWS: 1
AVERAGE RATING OF 8 8 of 5 Stars!

LS1/LS2/LS6 Cathedral Port EFI Base Only
  • Port Size - 2.49" Height x 1.21" Wide
  • Mounting Flange Gasket Type - Standard LS3 Molded O-Ring
  • Plenum Top Gasket Type - 3/32" Round O-ring Cord
  • Runner Length - 6.58", As-Cast Runner Cross-Sectional Area - Tapered 4.25 inē to 2.53 inē
These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration.


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  • Model: 300-227
  • FROM: Holley

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we added this on Tuesday 15 September, 2015.

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