Holley EFI Holley Hi-Ram Lower Manifold - GM LT1 - 300-237
$779.95
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The new Holley EFI Hi-Ram intake provides the ultimate performance with the new GM direct injected Gen V 6.2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper & cross-sectional area to perform in a wide variety of engine configurations. The optional injector bosses on the intake runners allow increased performance potential by using additional injectors along with the factory direct injection. When you look for the pinnacle of performance, price, and quality, look to Holley EFI.
Holley EFI Holley Hi-Ram Lower Manifold - GM LT1 - 300-237
$779.95
Features:
- Height at Plenum Flange: 9.44”
- Modular Design w/ Removable Top
- Easy Assembly w/ Top Mounted Screws on Plenum Top (all except front 2 screws)
- Overall Height: 13.34” (w/ EFI Top - 95mm or 105mm) – See Drawing
- A-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See Drawing
- 3500-8000+ RPM Power Band
- Intakes w/ Injector Ports Include Fuel Rails w/ Dual Mounting (1.48” or 2.56” O-ring to O-ring injector length)
- Head Flange has Clearance for Fuel Supply to High Pressure Pump
- Fuel Rails are Anodized, Laser Etched, and Machined for 8AN O-Ring Fittings at Each End
- O-Ring Seals at Cylinder Heads & Plenum Top
- Port Size: 2.06” High x 1.53” Wide
- Runner Length: Approx. 6.5”
- Rear of Plenum Machined for MAP & 3 Vacuum Ports
- Increased Runner Wall Thickness for Custom Porting at the Plenum to Runner Entry on Each Runner
- Large Plenum Volume of 549 Cubic Inches (w/ 1 x 95mm or 1 x 105mm Throttle Body Top)
- Several Top Options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or Blank Flange for Custom Throttle Bodies
- Available With or Without Injector Ports in the Runners
Product Specifications:
- Product Details: LT1 Hi-Ram, Lower Manifold Only w/out Port EFI Provisions. Order Plenum Top Separately.
- Basic Operating RPM Range: 3500-8000+ RPM
- Carburetor Flange: N/A
- Carburetor Quantity: N/A
- Carburetor Studs Included: N/A
- CNC Ported: No
- Color: Natural
- Construction: Cast
- Cylinder Head Port Shape: Rectangle
- Deck Height: 9.24 IN
- EGR Port: No
- Engine: GM Gen V LT1
- Flange Style: N/A
- Fuel Injectors Included: No
- Fuel Rail(s) Included: Yes
- Gasket Or Seal Included: Yes
- Grade Type: Performance
- Intake Port Gasket(s) Included: No
- Manifold Type: Hi-Ram
- Material: Aluminum
- Nitrous Bung(s) Included: No
- Part Type: Engine Intake Manifold
- Plenum Finish: Natural
- Product Type: Intake Manifold Base
- Removable Runners: No
- Removable Top/Lid: Yes
- Single Or Dual Plane Type: Single Plane
- Throttle Body Bore Diameter: N/A
- Throttle Body Gasket Included: No
- Throttle Body Included: No
- Type of Component: Lower Manifold
- Vacuum Ports: Yes
Installation Notes:
The versions of the LT1 Hi-Ram intake manifold with port EFI provisions and fuel rails are designed to accept Bosch Style EV-1 or GM LS7 fuel injectors