Best Ls3 Intake For Boost: 10 LS3 Manifolds Compared

#1 · Best Overall

1. Holley LS3 Lo-Ram

• Weight: 33.8 lb

Best for: High-rpm forced-induction packaging.

Why it ranks #1: Specifically designed for supercharged or turbocharged applications, with a low profile for air-to-water intercooler packaging or limited hood clearance.

Holley’s LS3 Lo-Ram is explicitly intended for supercharged or turbocharged use, with a stated 7,000–8,000-rpm peak-power target. Its modular design and low height address two practical build constraints: plenum arrangement and room for a top-feed air-to-water intercooler or a front-feed setup.

The kit is specified for GM Gen III/IV engines with LS3/L92 heads and works with OE or aftermarket cylinder heads, giving it a defined head-family application. Its modular design uses the included plenum entry, while the low height can help package a plenum-mounted air-to-water intercooler in a top-feed configuration or fit under a stock or mildly modified hood in a front-feed layout. Included mounting hardware also supports installation planning; the product is a single-injector kit.

Skip it if you need multi-port EFI rather than a single-injector kit; JGhyperX 300-116 specifies multi-port fuel injection.

Choose the Lo-Ram for an LS3/L92 forced-induction build targeting its stated high-rpm band and needing the described intercooler or hood packaging. Its single-injector configuration is a key boundary to resolve before planning the fuel system.

Listed on Amazon as: Holley 300-679: Ls3 Lo-Ram Manifold Kit, Single Injector

#2 · 30-PSI Rated

2. Htostar Low Profile Intake

• Weight: 18.26 lb

Best for: Low-clearance boosted LS builds.

Why it ranks #2: The listing states a 30-psi pressure rating, 102mm four-bolt throttle-body compatibility, and a low-profile 165mm height.

A 6.5-inch height gives the Htostar Racing manifold a low-profile package for LS3 and other rectangle-port LS engines, helping buyers work around limited under-hood space. Its 102mm inlet and stated 30-psi pressure rating make it a boost-oriented option, while its listed operating range is around 1,800–6,500 rpm.

The 102mm four-bolt throttle-body inlet provides a clearly specified opening for a compatible throttle body, and the low 6.5-inch height can help with packaging where hood clearance matters. Htostar lists the manifold for LS3 6.2L and other Gen III/IV rectangle-port engines, but notes that modifications may be required and aftermarket heads may misalign. Its 30-psi rating and 1,800–6,500-rpm range give boosted buyers useful operating limits to weigh against their combination.

Skip it if you need a stated 7,000–8,000-rpm forced-induction range; Holley 300-679 lists that operating target.

Choose this for a low-clearance LS3 or rectangle-port setup that needs a 102mm inlet and a stated pressure rating. Check the listed head caveats carefully, especially with aftermarket heads, and plan around its 1,800–6,500-rpm range.

Listed on Amazon as: Low Profile For LS3 Intake Manifold EFI Compatible with LS Rectangle Port Head Aluminum (102mm Silver)

#3 · Polymer EFI

3. FAST LSXr 102mm

• Weight: 20.4 lb

Best for: Polymer LS3/L92 manifold buyers.

Why it ranks #3: This LS3/L92 102mm EFI manifold uses a lightweight polymer construction; it is a versatile rectangle-port option but lacks a stated boost rating.

FAST’s LSXR combines a 102mm opening with an advanced polymer construction, giving LS3/L92 buyers a manifold option that is lighter than aluminum aftermarket intakes, according to the supplied description. Its vehicle-specific fit listing narrows its intended application to compatible GM rectangle-port engines rather than a universal LS swap.

FAST identifies the LSXR for LS3, L99, L92, and L76 engines, so buyers can start with a defined engine-family application. The 102mm manifold size gives a clear throttle-body opening specification, while the polymer construction is described as lighter, stronger, and better at dissipating heat than aluminum aftermarket intakes. Those material characteristics may matter when comparing intake mass and heat behavior, but the supplied listing does not provide an operating-rpm range or boost-pressure rating.

Skip it if you need a published pressure rating and rpm range; Htostar Racing’s 102mm LS3 manifold lists both.

Consider the FAST LSXR if your rectangle-port LS3/L92-family engine matches its vehicle-specific application and polymer construction suits your priorities. Its 102mm size is specified, but buyers needing documented boost limits or rpm guidance should look elsewhere.

Listed on Amazon as: FAST LSXr 102mm Intake Manifold for LS3/L92, 102mm Manifold

#4 · High-RPM EFI

4. JGhyperX LS Hi-Ram

• Weight: 30.2 lb

Best for: High-rpm multi-port EFI builds.

Why it ranks #4: The EFI Hi-Ram is listed for LS3/L92 engines, a 92mm throttle body, and a 3,500–8,000 rpm operating range.

The JGhyperX 300-116 combines a 92mm throttle-body bore with a listed 3,500–8,000-rpm operating range, making its intended high-rpm EFI use explicit. It is specified for LS3/L92 6.0L and 6.2L applications and includes a longitudinal plenum top with fuel rails machined for -8 AN O-ring fittings.

Its multi-port fuel-injection specification distinguishes this manifold from carbureted options, while the included complete intake section provides a stated starting point for an EFI installation. The 92mm bore identifies the throttle-body size to plan around, and the longitudinal plenum top has rails machined for -8 AN O-ring fittings. At 12.32 inches front and rear height, it calls for careful engine-bay packaging; the supplied information does not state a boost-pressure rating.

Skip it if you have limited hood clearance; Holley 300-679 lists a low-height configuration for specified intercooler or hood packaging.

This fits an LS3/L92 EFI build seeking the stated 3,500–8,000-rpm range and -8 AN rail provisions. Its 12.32-inch height is the major packaging consideration, and the listing provides no boost-pressure limit to guide forced-induction planning.

Listed on Amazon as: 300-116 LS Hi-Ram EFI Intake Manifold for LS3 L92 Silver

#5

5. A-Team Fabricated Intake

• Weight: 21.3 lb

Best for: Fabricated 102mm EFI LS builds.

Why it ranks #5: Its fabricated aluminum EFI design has a 102mm throttle-body opening and included fuel rails, but the listing gives no boost rating.

A 102mm throttle-body opening and included LS fuel rails define the A-Team Performance fabricated intake’s EFI-oriented package for LS3, L92, and L99 engines. Its aluminum sheet-metal construction is described as hand TIG-welded, while the two-inch-taller design is intended to improve performance and alter engine-bay packaging.

The 102mm opening gives buyers a specific throttle-body interface to plan around, and the included fuel rails keep the listed package focused on EFI installation. Its fabricated aluminum sheet-metal construction and hand TIG welds identify how the manifold is made, while the two-inch-taller design may affect hood clearance compared with a lower-profile choice. The listing names GM Gen III/IV small-block V8 LS-based applications, including LS3, L92, and L99, but supplies no boost-pressure or rpm rating.

Skip it if you need a stated 30-psi rating and 1,800–6,500-rpm range; Htostar Racing’s low-profile LS3 manifold lists both.

This suits an LS3/L92/L99 EFI buyer seeking a fabricated 102mm intake with rails included. Account for the two-inch-taller design when checking available space, and do not treat the listing as supplying a boost limit or rpm target.

Listed on Amazon as: A-Team Performance Fabricated LS Sheet Metal Intake Manifold – Silver, 102mm Throttle Body Opening & LS Fuel Rails – Compatible with GM Chevrolet Small Block V8 Gen III/IV (LS3, L92 & L99)

#6

6. Michigan Motorsports XS

Best for: Tight-bay 112mm LS builds.

Why it ranks #6: The 112mm XS manifold fits several rectangle-port LS engines and relocates fuel rails inside, but its listing does not specify forced-induction use.

Michigan Motorsports’ XS manifold moves the fuel rails inside the intake, a distinctive packaging choice intended to free available under-hood space while preserving a 112mm inlet for rectangle-port LS engines. Its listed fitment spans several 2007–2015 LS applications, including LS3, L99, L76, and L92.

The 112mm inlet gives this XS manifold a larger stated opening than many listed options, while its internal fuel-rail arrangement addresses the space conflict the manufacturer describes between rails and ideal runner design. The product is listed for 2007–2015 rectangle-port LS engines, including LS3, L99, L76, L77, L96, LY6, L94, and L9H. That broad named application list helps identify potential use, though the supplied information gives no pressure rating or operating-rpm range.

Skip it if you need a stated 30-psi rating and operating range; Htostar Racing’s 102mm LS3 manifold supplies both figures.

This suits a rectangle-port LS builder prioritizing a 112mm opening and internal fuel-rail packaging in a crowded engine bay. Match its listed year and engine applications to your build, and do not assume a boost limit from the supplied details.

Listed on Amazon as: Performance Design LS3 XS 112mm Intake Manifold for Rectangle Port LS Engines L99 L76 L77 L96 L92 LY6

#7

7. BTR Trinity Intake

• Weight: 22 lb

Best for: Short-runner LS3 manifold buyers.

Why it ranks #7: This short-runner, three-piece cast-aluminum manifold fits LS3 rectangle-port engines, but requires the new-style FRK-02 fuel rail kit.

BTR’s Trinity V2 uses a short-runner, three-piece design for LS3 and rectangle-port LS engines, offering a modular layout for buyers considering intake packaging and service workflow. The listing requires the newer FRK-02 fuel-rail kit and flags a throttle-body clearance issue on 2010–2015 Camaro SS applications.

The three-piece construction is described as allowing greater flexibility, while the short runners identify its architecture for LS3, L99, L92, and L96 rectangle-port engines. Its required FRK-02 fuel-rail kit is an important installation dependency, not an optional detail. Camaro SS owners from 2010–2015 also need to account for the stated stock-throttle-body clearance problem and use one of the named alternatives: Nick Williams SD103LS/SD103LSB or GM 12629992 LS9 throttle body.

Skip it if you need a stock throttle body on a 2010–2015 Camaro SS; FAST LSXR 102mm has no such restriction stated in its listing.

Choose the Trinity V2 if its short-runner, three-piece design suits your LS3 rectangle-port build and you can use FRK-02 rails. Camaro SS owners in the listed years must plan for one of the specified alternative throttle bodies.

Listed on Amazon as: BTR Trinity Intake Manifold LS3/Rectangle Port -Black- Brian Tooley Racing LS3 L99 L92 L96 TRA-3-BLK-P105-V2 (Intake and Fuel Rails)

#8

8. BTR Equalizer 3

Best for: Equalizer manifold and rail pairing.

Why it ranks #8: The Equalizer 3 listing identifies LS3/L92 fitment and a billet-aluminum fuel rail kit, but does not state a boost application or pressure rating.

BTR’s Black Equalizer 3 listing pairs an LS3/LSA/L92 6.2 square-port manifold with a fuel-rail kit, giving buyers a clearly identified manifold-and-rail combination. The listed rails use 6061 billet aluminum, gloss-black anodizing, -8 AN ORB openings, steel brackets, and stainless hardware.

The supplied description identifies the intake for square-port LS3, LSA, and L92 applications, helping define the intended head family. Its accompanying fuel rails have -8 AN ORB openings at either end, while steel brackets and stainless hardware support a rigid rail installation. The listing also names the Equalizer line as the rails’ intended use. It does not state an operating-rpm range, throttle-body size, or boost-pressure rating, so those details cannot guide application planning here.

Skip it if you need a stated 7,000–8,000-rpm forced-induction target; Holley 300-679 specifies that range.

This pairing suits buyers seeking a BTR Equalizer manifold and corresponding rail hardware for a listed square-port application. Check that your head configuration matches, and source operating and boost guidance elsewhere because the listing supplies neither.

Listed on Amazon as: BTR Black Equalizer 3 Intake Manifold Square Port Head Brian Tooley IMA-03 LS3 LSA L92 6.2 (Black Intake and Fuel Rails)

#9

9. Michigan Motorsports LS3

Best for: OEM-style LS3 swap manifold.

Why it ranks #9: This replacement-style rectangle-port intake fits LS3, L76, L92, LY6, and L99 engines, but no boost-specific design or rating is listed.

Michigan Motorsports’ manifold is described as like GM #12686561 and targets rectangle-port LS engines, including LS3, L76, L92, LY6, and L99. That OEM-style application focus gives swap builders a broad named engine list and a truck-intake airflow comparison without implying a boost rating.

The listed compatibility covers 6.0L and 6.2L LS engines used in Camaro, Corvette, Pontiac G8, and Chevrolet SS applications, helping buyers assess whether their vehicle family is represented. Its rectangle-port design is specifically described as improving airflow compared with truck-style intakes, which may suit performance-oriented swaps replacing that style of intake. However, the supplied details do not identify an rpm range, throttle-body size, or pressure rating, limiting its use as a boost specification reference.

Skip it if you need a stated boost limit and rpm band; Htostar Racing’s 102mm LS3 manifold lists a 30-psi rating and range.

Consider this for an OEM-style rectangle-port LS swap when its named engine and vehicle applications match your build. The truck-intake airflow comparison is relevant, but boost planning needs specifications that this listing does not supply.

Listed on Amazon as: Michigan Motorsports LS3 Intake Manifold | Like GM #12686561 | Fits 6.0L 6.2L LS3 L76 L92 LY6 L99 Rectangle Port Engines | Camaro Corvette G8 SS | OEM Intake

#10

10. JGhyperX Carb Intake

• Weight: 15.48 lb

Best for: Carbureted rectangle-port LS builds.

Why it ranks #10: This is a carbureted dual-plane manifold with a 1,500–6,500 rpm range, making it the least direct match for an EFI boost search.

The JGhyperX 300-129 is a complete dual-plane carbureted intake for rectangular-port LS3/L92-family heads, with a stated 1,500–6,500-rpm range. Its aluminum construction and 5.070-inch front, 6.140-inch rear heights give builders concrete configuration and packaging details to evaluate.

Because this is explicitly a carbureted manifold, it suits a different fuel-system workflow from EFI options; its complete intake section is listed for that carbureted arrangement. The dual-plane design and 1,500–6,500-rpm operating range identify its stated operating character, while the front and rear heights help assess engine-bay clearance. Fitment names LS3, L76, L92, and L99 rectangular-port heads, so confirm your engine falls within those listed applications before planning installation.

Skip it if you need multi-port EFI and a 92mm throttle-body bore; JGhyperX 300-116 lists both features.

Pick this for a carbureted rectangle-port LS build that suits the stated dual-plane layout and rpm range. Its carburetor-focused configuration is a firm boundary for EFI plans, while the listed front and rear heights should inform clearance decisions.

Listed on Amazon as: 300-129 rectangular port LS Carb Intake Manifold for LS3 V8 Silver