Features:

• Black anodized EFI fuel rails are machined for -8AN O-ring fittings and come included with the EFI Hi-Ram kits.
• 1.95” tall x 1.25” wide port flange openings, uses Mr. Gasket intake manifold gasket #5281
• Cost-effective alternative to fabricated sheet-metal or billet manifolds for high-performance applications where induction system height is not limited
• Requires the use of early type GM or small cap MSD or Holley Distributors. Not compatible with HEI distributors
• Throttle Cable Bracket is supplied in the kit
• MAP sensor port is for a GM Gen IV LS MAP sensor, manifold also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum
• Power Band: 1500-8000 RPM
• Uses drive by wire or cable actuated GM Gen IV LS 4-bolt throttle bodies
• Plenum Top Gasket Type – 3/32” Round O-ring Cord
• Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish
• The Small Block Chevy Hi-Ram manifold is available in either a traditional Hi-Ram 105mm plenum layout or with a hood-height friendly 95mm front-feed plenum layout
• The coolant outlet is a standard Small Block Chevy thermostat housing flange and (1) 1/2 NPT and (2) 3/8 NPT coolant ports are provided.
• Designed for 1955-86 265-400 Gen 1 Chevy engines fitted with cylinder heads having a standard intake manifold flange configuration. Not designed for raised intake port, 18 degree, or L31 Vortec type cylinder heads.

About Holley

Holley Performance Brands is the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, fuel injection, and fuel systems.

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