Free US Shipping·Ships in 24 Hours from CA & GA·30-Day Free Returns·1-Year Warranty
- Free shipping, ships within 24 hours from our California & Georgia warehouses
- 30-day free returns, we pay return shipping
- 1-year warranty on casting defects
- Made in our own factory, leak-tested and inspected before it ships
300-116 Hi-Ram EFI Intake Manifold for Rectangle Port LS
A 92mm Hi-Ram EFI intake manifold for GM LS engines with rectangle port heads (LS3, L76, L92, L99). Built for big-cube, high-rev race engines up to about 427–440 cu. in. and 7,500–8,500 RPM depending on the combination, where hood height isn’t a limitation.
- Long runners with an as-cast tapered cross-section that works across many engine combinations
- Longitudinal plenum top
- Fuel rails machined for -8 AN O-ring fittings, sized for high fuel flow
- Accepts EV1 or Pico style injectors
- 92mm throttle body opening; 12.32 in. tall
Before you order:
- Fits rectangle port LS3 / L76 / L92 / L99 heads only. For cathedral port LS1/LS2/LS6, see our 300-122 or 300-123. Not for LS7 heads.
- A modified hood will be required for most vehicles.
- Built for maximum-performance use; it won’t accept stock components and hardware.
- OE LS injectors may not fit properly in the fuel rails; different spacers or brackets may need to be purchased separately.
Fitment
LS3 / L76 / L92 / L99 engines (6.0L / 6.2L), including these original applications and swaps using them:
- 2010–2015 Chevrolet Camaro
- 2008–2013 Chevrolet Corvette
- 2014–2017 Chevrolet SS
- 2009 Pontiac G8
- 2007–2008 Cadillac Escalade / ESV / EXT
- 2007–2008 GMC Sierra 1500, Yukon, Yukon XL 1500
- 2008 Chevrolet Tahoe; 2008 Hummer H2
Full specifications are in the Specifications tab.
What’s Included
- 1 × Hi-Ram intake manifold
- 1 × fuel rail kit
- Additional parts as shown in the product photos
“This thing is a GAME CHANGER!!!!!! Buy it now it’s a must have for any LS build….”Kendi Celeste R., verified customer
Why Haytalras
- Built in our own factory. We cast and CNC-machine our intake manifolds in-house. The same factory has produced intake manifolds for Holley, TSP and Professional Products.
- Checked before it ships. Every manifold goes through air-tightness, dimensional and visual inspection.
- Ships from the US. Free shipping from our California and Georgia warehouses, out the door within 24 hours, usually delivered in 3–7 days.
- Backed by us. 30-day free returns and a 1-year warranty on casting defects.
Frequently Asked Questions
Will this fit my LS1 or LS6?
No. LS1/LS2/LS6 use cathedral port heads. Choose the 300-122 (92mm) or 300-123 (102mm).
Will it fit under my stock hood?
In most vehicles, no. At 12.32 in. tall, plan on a cowl hood or hood modification.
Not sure it fits?
Email haytalras@gmail.com with your engine code and cylinder head casting number and we’ll confirm before you order.
Download the official Haytalras installation instructions for this 300-116 part. We recommend reading them and doing a test fit before final assembly.
View / Download Installation PDF
Questions during install? Email haytalras@gmail.com with your engine and part number and we'll help.
Shipping
- Orders ship within 24 hours on business days from our US warehouses in Ontario, California and Bloomingdale, Georgia.
- Most US orders arrive within 3–7 days after shipping. A tracking number is emailed as soon as your package leaves the warehouse.
- Need a part urgently? Email us and we'll check stock at the closest warehouse.
Returns
- Eligible items can be returned free of charge within 30 days of delivery.
- Please contact us at haytalras@gmail.com before sending anything back so we can set up your return.
- We recommend a test fit as soon as your package arrives, before final assembly.
Full details: Returns & Warranty
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