Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads-Black Finish
- 2500-7000 RPM power band
- 4150 Square bore flange
- Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
- Minimum carb flange height - fit in vehicles with minimum hood modifications
- Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS mild power adder applications
- Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality
- Weight - 11.5 lbs.
- Height (front) - 5.417" to the lifter valley cover flange at the engine block front flange and bellhousing flange
- Port size - 2.33" height x 1.27" wide
- Includes Viton O-ring intake to cylinder head gaskets - Viton is a registered trademark of DuPont Performance Elastomers
- This manifold will not work with factory fuel rails and requires the use of Holley Fuel Rail Kit 508-37
Includes mounting bolts & washers Also includes O-ring cylinder head mounting flange gaskets for an OEM style seal. This manifold will not work with factory fuel rails and requires the use of Holley Fuel Rail Kit 508-38.
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.
