Features:

• Height at Plenum Flange: 9.44”
• Modular Design w/ Removable Top
• Easy Assembly w/ Top Mounted Screws on Plenum Top (all except front 2 screws)
• Overall Height: 13.34” (w/ EFI Top - 95mm or 105mm) – See Drawing
• A-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See Drawing
• 3500-8000+ RPM Power Band
• Intakes w/ Injector Ports Include Fuel Rails w/ Dual Mounting (1.48” or 2.56” O-ring to O-ring injector length)
• Head Flange has Clearance for Fuel Supply to High Pressure Pump
• Fuel Rails are Anodized, Laser Etched, and Machined for 8AN O-Ring Fittings at Each End
• O-Ring Seals at Cylinder Heads & Plenum Top
• Port Size: 2.06” High x 1.53” Wide
• Runner Length: Approx. 6.5”
• Rear of Plenum Machined for MAP & 3 Vacuum Ports
• Increased Runner Wall Thickness for Custom Porting at the Plenum to Runner Entry on Each Runner
• Large Plenum Volume of 549 Cubic Inches (w/ 1 x 95mm or 1 x 105mm Throttle Body Top)
• Several Top Options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or Blank Flange for Custom Throttle Bodies
• Available With or Without Injector Ports in the Runners

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

  $41.08

  Qty: 

  Add To Cart

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