Holley Single Plane EFI Intake - GM LS1/LS2/LS6 - Part# 300-137

Holley Single Plane EFI Intake - GM LS1/LS2/LS6 - Part# 300-137

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

Features:
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 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
Port size - 2.50" height x 1.15" wide
Includes Viton® O-ring intake to cylinder head gaskets - Viton® is a registered trademark of DuPont Performance Elastomers
Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219