Year
Make
Model
Submodel
Engine
2004 - 2007
Cadillac
CTS
V
5.7L
2004 - 2007
Cadillac
CTS
V
6.0L
2004 - 2005
Cadillac
CTS-V
5.7L
1998 - 2002
Chevrolet
Camaro
5.7L
1997 - 2004
Chevrolet
Corvette
5.7L
2005 - 2008
Chevrolet
Corvette
6.0L
2005 - 2006
Chevrolet
SSR
6.0L
2006 - 2009
Chevrolet
Trailblazer
6.0L
1998 - 2002
Pontiac
Firebird
5.7L
2004
Pontiac
GTO
5.7L
2004 - 2006
Pontiac
GTO
6.0L
COMPATIBLE:
2004 - 2005 CADILLAC CTS-V (5.7L-LS6)
1998 - 2002 CHEVROLET CAMARO (5.7L-LS1)
1997 - 2004 CHEVROLET CORVETTE (5.7L-LS1)
2001 - 2004 CHEVROLET CORVETTE Z06 (5.7L-LS6)
2005 - 2008 CHEVROLET CORVETTE (6.0L-LS2)
1998 - 2002 PONTIAC FIREBIRD (5.7L-LS1)
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.
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! • 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 • 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. • Cast aluminum construction. • 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 92/102mm EFI Plenum Top – 12.32” 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)
-
Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
Basic Operating RPM Range |
3500-8000 RPM |
|---|---|
Brand |
Holley EFI |
Category Filter |
Intake Manifolds |
Clearance Category |
Intake Manifolds |
Color |
Black |
Construction |
Cast |
EGR Port |
No |
Emission Code |
4 |
Engine |
GM LS1/LS2/LS6 |
Finish |
Black |
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 |
Black |
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 |
Sale Category |
Air and Fuel Delivery |
Single Or Dual Plane Type |
Single Plane |
Throttle Body Bore Diameter |
92 MM |
Throttle Body Included |
No |
Warranty |
Limited 90 Day |
UPC |
090127688908 |
Part Number |
300-122BK |
ABOUT HOLLEY PERFORMANCE
For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.
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