• 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.
| Basic Operating RPM Range |
3500-8000 |
| Brand |
Holley |
| Carburetor Flange |
N/A |
| Carburetor Quantity |
N/A |
| 10652 |
No |
| Category |
Engine |
| 9063 |
No |
| 17 |
Black |
| 158 |
Cast |
| 5337 |
Cathedral |
| 6621 |
9.24 |
| 8095 |
No |
| Emission Code |
4 |
| Engine |
GM LS1/LS2/LS6 |
| Flange Style |
N/A |
| 906 |
No |
| 10644 |
No |
| Fuel System Type |
Carb |
| 353 |
No |
| 3390 |
Performance |
| 10651 |
No |
| 10 |
Aluminum |
| 10648 |
No |
| part type |
Engine Intake Manifold |
| Plenum Finish |
Black |
| Product Type |
Intake Manifold Base |
| 10645 |
No |
| 10649 |
Yes |
| 6642 |
Single Plane |
| Sub Category |
Cylinder Block Components |
| Throttle Body Bore Diameter |
N/A |
| Throttle Body Gasket Included |
No |
| 10626 |
No |
| Type of Component |
Lower Manifold |
| Vacuum Ports |
Yes |
| Warning |
California Proposition 65 |
| Warranty |
Manufacturer's Limited 90 Day Warranty |
| Description_ABR |
LS1 2 6 HI R |
| Description_SHO |
HOLLEY HI RAM LOWER |
| Description_INV |
LS1/2/6 HI-RAM, IM CARB, BASE ONLY |
| Description_ASC |
These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration. |
| Description_DES |
Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6-Black |
| Description_EXT |
LS1/LS2/LS6 Cathedral Port Carbureted Base Only (Plenum-Top-Mounting Fabrication Flange Available) |
| Description_MKT |
• 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. |
| 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. |
| Description_MKT |
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! |
| Description_MKT |
• Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations |
| Description_MKT |
• Cast aluminum construction. |
| Description_MKT |
• 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. |
| Description_FAB |
Port Size – 2.49” Height x 1.21” Wide |
| Description_FAB |
Plenum Top Gasket Type – 3/32” Round O-ring Cord |
| Description_FAB |
Mounting Flange Gasket Type – Standard LS3 Molded O-Ring |
| Description_FAB |
Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in² |
| Description_ABR |
LS1 2 6 HI R |
| Description_SHO |
HOLLEY HI RAM LOWER |
| Description_INV |
LS1/2/6 HI-RAM, IM CARB, BASE ONLY |
| Description_ASC |
These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration. |
| Description_DES |
Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6-Black |
| Description_EXT |
LS1/LS2/LS6 Cathedral Port Carbureted Base Only (Plenum-Top-Mounting Fabrication Flange Available) |
| Description_MKT |
• 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. |
| 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. |
| Description_MKT |
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! |
| Description_MKT |
• Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations |
| Description_MKT |
• Cast aluminum construction. |
| Description_MKT |
• 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. |
| Description_FAB |
Port Size – 2.49” Height x 1.21” Wide |
| Description_FAB |
Plenum Top Gasket Type – 3/32” Round O-ring Cord |
| Description_FAB |
Mounting Flange Gasket Type – Standard LS3 Molded O-Ring |
| Description_FAB |
Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in² |
| Basic Operating RPM Range |
3500-8000 |
| Brand |
Holley |
| Carburetor Flange |
N/A |
| Carburetor Quantity |
N/A |
| 10652 |
No |
| Category |
Engine |
| 9063 |
No |
| 17 |
Black |
| 158 |
Cast |
| 5337 |
Cathedral |
| 6621 |
9.24 |
| 8095 |
No |
| Emission Code |
4 |
| Engine |
GM LS1/LS2/LS6 |
| Flange Style |
N/A |
| 906 |
No |
| 10644 |
No |
| Fuel System Type |
Carb |
| 353 |
No |
| 3390 |
Performance |
| 10651 |
No |
| 10 |
Aluminum |
| 10648 |
No |
| part type |
Engine Intake Manifold |
| Plenum Finish |
Black |
| Product Type |
Intake Manifold Base |
| 10645 |
No |
| 10649 |
Yes |
| 6642 |
Single Plane |
| Sub Category |
Cylinder Block Components |
| Throttle Body Bore Diameter |
N/A |
| Throttle Body Gasket Included |
No |
| 10626 |
No |
| Type of Component |
Lower Manifold |
| Vacuum Ports |
Yes |
| Warning |
California Proposition 65 |
| Warranty |
Manufacturer's Limited 90 Day Warranty |
