Holley EFI - 300-123
Holley LS Hi-Ram EFI Manifold GM LS1/LS2/LS6
LS1/LS2/LS6 Cathedral Port EFI for 1 x 105MM Throttle Body
• Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM.
- Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
- Total Height with 92/105mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
- Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
- Throttle Body Flange Location, with 102mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical)
- Plenum Top Gasket Type – 3/32” Round O-ring Cord
- Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
- Port Size – 2.49” Height x 1.21” Wide
Basic Operating RPM Range: 3500-8000 RPM
Brand: Holley EFI
Category: Intake Manifolds
Color: Natural
Construction: Cast
EGR Port: No
Emission Code: 4
Engine: GM LS1/LS2/LS6
Finish: Silver
Flange Style: EFI
Front Height: 12.32 inch
Front Maximum Height: 12.32 IN
Fuel System Type: EFI
Grade Type: Performance
Intake Port Gasket(s) Included: No
Manifold Type: Hi-Ram
Material: Aluminum
Nitrous Bung(s) Included: No
Plenum Finish: Natural
Product Type: Intake Manifold
Rear Height: 11.00 inch
Rear Maximum Height: 11 IN
Recommended Use: Forced Induction
Removable Runners: No
RPM Power Band: 3500-8000 RPM
Single Or Dual Plane Type: Single Plane
Throttle Body Bore Diameter: 105 MM
Throttle Body Included: No
Warning: California Proposition 65
Warranty: Limited 90 Day
