Holley EFI GM LS1/2/6 Single Plane Intake Manifold - Silver

$553.95

Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.

Includes mounting bolts & washers. Also includes O-ring cylinder head mounting flange gaskets for an OEM style seal. Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219.

NOTE: The EFI versions of the LS HI-Ram intake manifold and fuel rail are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors. OE LS fuel injectors may not fit properly in the Hi-Ram EFI intake manifold fuel rail assembly. There is a kit available separately for the LS7 Hi-Ram EFI to allow the use of stock LS7 fuel injectors, P/N 300-230 (see below in the service parts section).

Features:

Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications
Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
Weight - 11.5 lbs.
Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219
4150 Square bore flange
2500-7000 RPM power band
Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality
Minimum carb flange height - fit in vehicles with minimum hood modifications
Height (front) - 5.417" to the lifter valley cover flange at the engine block front flange
Includes Viton® O-ring intake to cylinder head gaskets - Viton® is a registered trademark of DuPont Performance Elastomers
Port size - 2.50" height x 1.15" wide