LQ9 Crate Engine – Chevrolet Performance LS364/450 6.0L LS Series Engine


  • 452 hp @ 5,600 rpm/441 lb.-ft. @ 4,800 rpm
  • LQ9 Engine Block with LS3/L92 Heads
  • Engine comes with Gen III LQ9 truck oil pan
  • Can be used on 02-07 trucks to upgrade from 5.3 to 6.0

NOTE: MUST use 3-Bolt Drive-By-Wire Throttle Body with Adapter if staying with DBW throttle. Can be used with either 3 or 4 bolt cable driven throttle body.

Shipping is free, but there is a delivery fee for residential addresses.

LS364/450HP Crate Engine

One of the most popular crate engines available today, the LS364/450 is the crate engine version of the 6.0L LQ9. However, unlike an original LQ9 (also known as the Vortec HO 6000 or the VortecMAX), the LS364/450 has several upgrades:

  • Upgraded cylinder heads
  • High lift camshaft (LS6 cam like this one)
  • Slightly higher compression ratio (10.3 vs. 10.1)

These improvements are the reason that the LS364/450 makes substantially more power than the LQ9.

  • LS364/450 – 452 hp @ 5,600 RPM, 441 lb-ft @4,800 RPM
  • LQ9 – 345hp @ 5,200 RPM, 380 lb-ft @ 4,000 RPM

Yet just like the original LQ9, the LS364/450 is a strong motor that’s built to run. And it’s also one of the most affordable Chevrolet Performance crate engines available, especially on a dollar per horsepower basis.

What’s Included

The LS364/450 is sold without an intake manifold, front accessory drive system, ignition, or fuel system. If you’re swapping this engine out with another LS series motor, you may be able to re-use what you have. Otherwise, you’ll want to check out our accessory drive systems, LS intake manifolds, and either our fuel injection systems or carb options.

Important Notes

  • This engine comes with a Gen III LQ9 truck oil pan
  • Can be used with either 3 or 4 bolt cable-driven throttle body
  • Must use a 3-bolt Drive-By-Wire (DBW) throttle body with an adapter if staying with the DBW throttle
  • Assembly does not include electronics
  • Intake manifold is not included; Any intake manifold you install must be matched to the LS3 or L92 style intake ports (which are rectangular)
  • LS3 or L96 production intake manifolds can be used, but require an aftermarket adapter plate for use with early LS three-bolt throttle bodies
  • Not intended for marine applications
  • Chevrolet performance part number 19370163.
Weight 486 lbs

Manufacturer Part Number




LS364/450 Tech Specs

  • Power: 452 hp @ 5,600 rpm and 441 lb.-ft. @ 4,800 rpm / with 24X Reluctor
  • Engine Type: Performance LQ9 long block
  • Displacement (cu in): 364
  • Displacement (L): 6.0
  • Bore x Stroke (in): 4.000 x 3.622
  • Bore x Stroke (mm): 101.6 x 92mm
  • Block: Cast iron with 6-bolt, cross-bolted main caps
  • Crankshaft: Nodular iron
  • Connecting Rods: Powdered metal
  • Pistons: Hypereutectic aluminum
  • Camshaft Type: LS6 Hydraulic roller (P/N 12565308)
  • Valve Lift (in): 0.550″ intake / 0.550″ exhaust
  • Camshaft Duration (@0.050 in): 204° intake / 218° exhaust
  • Cylinder Heads: Aluminum LS3 rectangular port; as cast with 68cc chambers (see P/N 88958758)
  • Valve Size (in): 2.165 intake (hollow stem) / 1.590 exhaust (Solid Stem)
  • Compression Ratio: 10.3:1
  • Rocker Arms: Investment cast, roller bearing trunion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Premium
  • Maximum Recommended RPM: 6,800
  • Reluctor Wheel: 24x
  • Balanced: Internal
  • Oil Filter: PF-48 (89017524)

LS364/450 Walk-Through Video With Intake Information

Swapping A LS364/450 Into A 2000 Silverado

Official LS364/450 Info From Chevrolet Performance

Chevrolet Performance Crate Engines carry a 24 Month or 50,000 mile warranty (whichever comes first) when installed by a qualified independent service center. Chevrolet Performance Crate Engines also come with a 30 day start up warranty (parts only).

There are some additional limitations on the warranty – please see the official GM warranty documentation for more information.


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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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