Vehicle Applications

• 2014+ Corvette
• 2017+ Corvette Grandsport
• 2016+ Camaro SS

Product Highlights

• Gen V Aluminum Cylinder Block
• Direct Fuel Injection
• Variable Valve TIming (VVT)
• Active Fuel Management (AFM)
• Advanced Electronic Throttle Control
• 58X Ignition Systems

LT1 Engine Specs (VIN "7")

The information listed here is for a stock engine.

Performance Specifications
Compression Ratio	11:5
Horsepower Rating	455 hp @ 6,000 rpm
Torque Rating	460 ft.-lbs. @ 4,600 rpm

 

Application Information
VIN 8th Digit	Year	Make	Model
7	2014-present	Chevrolet	Corvette Stingray
	2017-present		Corvette Grandsport
	2016-present		Camaro SS

 

Engine Block Specifications
Part Number	12619171, 19329617
Material	319-T7 Aluminum
Displacement	6.2L / 376 c.i.d.
Bore Dia.	4.065 in.
Stroke	3.622 in.
Deck Height	9.240 in.
Bore Spacing	4.400 in.
Thrust Bearing Location	#3 Main, 1/2 thrust
Main Cap Style	6-bolt
Main Housing Bore Dia.	2.751 in.
Cam Housing Bore Dia.	Bore 1/5 = 2.346 in. Bore 2/4 = 2.326 in. Bore 3 = 2.307 in.
Cam-to-Crank Centerline	4.914 in.
Oil Squirters	8

 

Rotating Assembly Specifications
Piston Material	Hypereutectic Cast Aluminum Alloy
Piston Style	Domed (with reliefs for the exhaust valve and direct injector)
Piston Volume	0.6cc (net)
Wrist Pin Dia.	0.9431 in. (full floating)
Connecting Rod Material	Powdered Metal
Connecting Rod Style	I-beam
Connecting Rod Length	6.098 in.
Connecting Rod Housing Bore	2.225 in.
Connecting Rod Bolts	M9 x 1 x 43
Connecting Rod Part Number	12654242
Crankshaft Material	1538MV Forged Steel
Crankshaft Part Number (Wet Sump)	12623492
Crankshaft Part Number (Dry Sump)	12629940
Crankshaft Main Journal Dia.	2.559 in.
Crankshaft Rod Journal Dia.	2.100 in.
Reluctor Wheel	58X
Harmonic Balancer	Iron

 

Cylinder Head Specifications
Part Numbers	12678633, 12620544, 12620545
Casting Numbers	12620549
Material	319-T7 Aluminum
Combustion Chamber Volume	59.02cc
Intake Port Shape	Rectangle
Intake Runner Volume	297cc
Intake Manifold Bolt Pattern	LT1 Specific
Exhaust Port Shape	Flat Oval
Exhaust Runner Volume	107cc
Cylinder Head Bolt Style	Torque to Yield (TTY)
Cylinder Head Bolt Size	(10) M12 x 1.75, M8 corner bolts

 

Camshaft Specifications
Part Number	12629512
Duration @ .050 in. (int./exh.)	200°/207°
Valve Lift (int./exh.)	0.551 in./0.524 in.
Lobe Separation	116.5°
Cam Gear Attachment	1-bolt
Cam Gear Poles	4X
Active Fuel Management (AFM)	Yes
Variable Valve Timing (VVT)	Yes

 

Valvetrain Specifications
Lifter Style	Hydraulic Roller
Lifter Link Style	Plastic Lifter Tray
Lifter Body Dia.	0.842 in.
Pushrod Dimensions	7.85 in. (long) x 0.342 (dia.)
Rocker Arm Mounting Style	Pedestal
Rocker Arm Style	Die-Cast, Roller Fulcrum
Rocker Ratio	1.8
Rocker Offset	None
Valve Spring Style	Beehive
Valve Spring Color	Natural
Intake Valve Angle	12.5° / Splayed 2.61°
Exhaust Valve Angle	12.0° / Splayed 2.38°
Intake Valve Material	Steel, Hollow Stem
Intake Valve Dia.	2.126 in.
Exhaust Valve Material	Steel, Sodium Filled
Exhaust Valve Dia.	1.590 in.
Timing Chain Guide Style	Spring Loaded Tensioner

 

Other Specifications
Intake Manifold	Car style
Throttle Body	87mm, 4-bolt
Throttle Control	Electronic (Drive-by-Wire)
Fuel Injector P/N	12656931
Fuel Injector Flow	123 lbs./hr. (2,205 max psi)
Flex Fuel Capable (E-85)	No
Computer	E92
Crankshaft Reluctor Ring	58X
Camshaft Sensor Location	Timing Cover
Oil Capacity (Wet Sump)	6.5 qt.
Oil Capacity (Dry Sump)	9.75 qt.

Note: Some Corvette versions of the LT1 came with a dry sump oiling system.