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LS7 570hp Wet Sump Crate Engine 7.0L 427 - 19421004



Payable by wire transfer only, no exceptions.

(UPDATED 6-29-22 please call for latest availability)

These have been discontinued by GM - No further ETA's have been given.



Chevrolet Performance’s new LS427/570 builds on the track-bred performance of the LS7 engine and enhances it in two important ways: More power and easier installation. A new, higher-lift camshaft helps it produce 570 horsepower and 540 lb.-ft. of torque—increases of 65 hp and 70 lb.-ft. over the production-based LS7 crate engine.
Additionally, a new wet-sump oiling system facilitates easier and less costly installation, because the supporting components for the production-based LS7’s dry-sump system are not required.

Product highlights:
• Based on the production LS7 crate engine
• Unique high-lift hydraulic roller camshaft with.591-in. intake/ .590-in. exhaust lift
• Unique high-rate valve springs
• F-body wet-sump oil pan and specific wet-sump oil pump
• Low-profile LS7 EFI intake manifold with fuel rails, injectors and throttle body installed
• CNC-ported cylinder heads featuring 2.2-inch titanium intake valves
• Comes assembled with 14-inch Camaro Z/28 168-tooth manual transmission flywheel
• Use with LS427 Engine Controller P/N 19420000 (sold separately)
• Not intended for marine applications
Part Number: 19420191
Engine Type: LS-Series Small-Block V-8
Displacement (cu in): 427 (7.0L)
Bore x Stroke (in): 4.125 x 4.000 (101.6 x 92 mm)
Block (P/N 12602689): Cast aluminum block with 6-bolt, cross-bolted main caps
Crankshaft (P/N 12611649): Forged steel
Connecting Rods (P/N 12661677): Forged titanium
Pistons: Hypereutectic aluminum
Camshaft Type (P/N 19419859): Hydraulic roller
Valve Lift (in): .591 intake/.590 exhaust
Camshaft Duration (@.050 in): 227º intake / 242º exhaust
Camshaft Lobe Separation Angle: 116º
Cylinder Heads: CNC-ported LS7-style ports with 70cc combustion chambers
Valve Size (in): 2.200 titanium intake, 1.610 sodium filled exhaust
Compression Ratio: 11.0:1
Rocker Arms: Investment-cast, roller bearing trunnion
Rocker Arm Ratio: 1.8:1 (offset intake)
Recommended Fuel: Premium pump
Maximum Recommended RPM: 7,000 rpm
Balanced: Internal
NOTE: LS427/570 engine will include F-body wet-sump oil pan. 
Chevrolet Performance recommends 15W-50 MOBIL 1 engine oil for the LS427/570 Crate Engine