Features:

• Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
• Total Height with 92/105mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
• Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
• Throttle Body Flange Location, with 102mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical)
• Plenum Top Gasket Type – 3/32” Round O-ring Cord
• Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
• Port Size – 2.49” Height x 1.21” Wide

About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!

• Gasket Kit, Hi-Ram Plenum O-Ring Cord

  Gasket Kit, Hi-Ram Plenum O-Ring Cord

  Part# 508-21

  $36.17

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• Intake Manifold Gasket Set, O-Ring LS1/2/6

  Intake Manifold Gasket Set, O-Ring LS1/2/6

  Part# 508-23

  $46.52

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• Fuel Rail Kit

  LS1 for Dual-Quad and cathedral port Hi-Ram

  Part# 534-204

  $245.95

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• Holley Hi-Ram Manifold Top - 1 x 105mm Throttle Valve - GM LS

  1 x 105mm GM LS Throttle Valve Top Only- Bolt up through design (Threaded mounting holes in lid)

  Part# 300-232

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The following vehicles are considered Racing Use Only Vehicles:

• Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle