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LT1

LT1

LT1 6.2L V8 "GEN V"

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.

LT1 Harnesses