• The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. • Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! • EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. • 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. • Cast aluminum construction.
Specifications:
| Basic Operating RPM Range |
3500-8000 |
| Brand |
Holley EFI |
| Carburetor Flange |
N/A |
| Carburetor Quantity |
N/A |
| Carburetor Studs Included |
N/A |
| Category |
Engine |
| 9063 |
No |
| Color |
Natural |
| 158 |
Cast |
| 5337 |
Cathedral |
| 6621 |
9.24 |
| 8095 |
No |
| Emission Code |
4 |
| Engine |
GM LS1/LS2/LS6 |
| Flange Style |
EFI |
| 6643 |
12.32 |
| 906 |
No |
| 10644 |
Yes |
| Fuel System Type |
EFI |
| 353 |
Yes |
| 3390 |
Performance |
| 10651 |
No |
| Manifold Type |
Hi-Ram |
| 10 |
Aluminum |
| 10648 |
No |
| part type |
Engine Intake Manifold |
| Plenum Finish |
Natural |
| Product Type |
Intake Manifold |
| 6645 |
11 |
| Recommended Use |
Forced Induction |
| 10645 |
No |
| 10649 |
Yes |
| 6642 |
Single Plane |
| Sub Category |
Cylinder Block Components |
| Throttle Body Bore Diameter |
92 MM |
| Throttle Body Gasket Included |
Yes |
| 10626 |
No |
| Vacuum Ports |
Yes |
| Warning |
California Proposition 65 |
| Warranty |
Manufacturer's Limited 90 Day Warranty |
| Description_ABR |
SNEFI EIM |
| Description_SHO |
HOLLEY LS HI-RAM EFI |
| Description_INV |
LS126 HIRAM IM EFI 92MM LS TB |
| Description_ASC |
*** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions. |
| Description_DES |
Holley LS Hi-Ram EFI Manifold GM LS1/LS2/LS6 |
| Description_EXT |
LS1/LS2/LS6 Cathedral Port EFI for 1 x 92MM Throttle Body |
| Description_MKT |
• The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. • Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! • EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. • 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. • Cast aluminum construction. |
| Description_FAB |
Total Height with 92/102mm 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 Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block. Port Size – 2.49” Height x 1.21” Wide Mounting Flange Gasket Type – Standard LS3 Molded O-Ring Plenum Top Gasket Type – 3/32” Round O-ring Cord Throttle Body Flange Location, with 92mm 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) |
This Part Fits:
| Year |
Make |
Model |
Submodel |
Engine |
| 1997-2004 |
Chevrolet |
Corvette |
Base Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1997-2004 |
Chevrolet |
Corvette |
Base Hatchback 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998 |
Chevrolet |
Corvette |
Indianapolis 500 Pace Car Convertible 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998 |
Chevrolet |
Corvette |
Indianapolis 500 Pace Car Hatchback 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2000 |
Pontiac |
Firebird |
Formula Convertible 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2002 |
Chevrolet |
Camaro |
Z28 Convertible 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2002 |
Chevrolet |
Camaro |
Z28 Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2002 |
Chevrolet |
Camaro |
Z28 SS Convertible 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2002 |
Chevrolet |
Camaro |
Z28 SS Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2002 |
Pontiac |
Firebird |
Formula Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2002 |
Pontiac |
Firebird |
Trans Am Convertible 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2002 |
Pontiac |
Firebird |
Trans Am Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 1998-2004 |
Chevrolet |
Corvette |
Base Convertible 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 2001-2004 |
Chevrolet |
Corvette |
Z06 Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 2003 |
Chevrolet |
Corvette |
50th Anniversary Edition Convertible 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 2003 |
Chevrolet |
Corvette |
50th Anniversary Edition Hatchback 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 2003 |
Chevrolet |
Corvette |
50th Anniversary Edition Pace Car Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 2004 |
Pontiac |
GTO |
Base Coupe 2-Door |
5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated |
| 2004-2005 |
Cadillac |
CTS |
V Sedan 4-Door |
5.7L 346Cu. In. V8 GAS OHV Naturally Aspirated |
| 2005-2007 |
Chevrolet |
Corvette |
Base Convertible 2-Door |
6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated |
| 2005-2007 |
Chevrolet |
Corvette |
Base Hatchback 2-Door |
6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated |
