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LSA

LSA Vortec 6.2L V8 "GEN IV"

Vehicle Applications

  • 2009–2015 Cadillac CTS-V
  • 2012–2015 Chevrolet Camaro ZL1

Product Highlights

  • Gen IV Aluminum Cylinder Block
  • Rectangular Port Aluminum Cylinder Heads
  • Roots Style Supercharger (1.9L Displacement)
  • Advanced Electronic Throttle Control
  • 58X Ignition Systems

LSA Engine Specs (VIN "P")

The information listed here is for a stock engine.

Performance Specifications

Compression Ratio 9.1 : 1
Horsepower Rating 556-580 hp. @ 6300 rpm
Torque Rating 551-556 ft./lbs.

 

Application Information

VIN 8th Digit

Year

Make

Model

P

2009-15

Cadillac

CTS-V

2012-15

Chevrolet

Camaro ZL1

 

Engine Block Specifications

Block P/N

12623968

Material

319-T7 aluminum

Casting Number

12621766

Displacement

6.2L / 376 c.i.d.

Bore

4.065 in.

Stroke

3.622 in.

Deck Height

9.240 in.

Bore Spacing

4.400 in.

Thrust Bearing Location

#3 Main

Main Cap Style

6-bolt, Nodular Iron

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.

Piston Oil Squirters

Yes

 

Rotating Assembly Specifications

Piston Material

Cast aluminum alloy (with anti-friction coating and anodized top ring groove)

Piston Style

Dished without valve reliefs

Piston P/N

19180413

Piston Volume

+15cc

Wrist Pin Dia.

0.9431 in.

Connecting Rod P/N

12604857

Connecting Rod Material

Steel Powdered Metal

Connecting Rod Weight

696g

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 40

Crankshaft Material

Forged Steel

Crankshaft P/N

12623968

Crankshaft Rear Flange

8-bolt

Crankshaft Main Journal Dia.

2.559 in.

Crankshaft Rod Journal Dia.

2.100 in.

Reluctor Wheel

58X

 

Cylinder Head Specifications

Casting Number

4863

Material

356-T6 Rotocast Aluminum

Combustion Chamber Volume

69.8cc

Intake Port Shape

Rectangle

Intake Runner Volume

259cc

Exhaust Port Shape

D-port

Exhaust Runner Volume

89cc

Valve Seat Material (int./exh.)

Brico 3010

Cylinder Head Bolt Style

Torque to Yield (TTY)

Cylinder Head Bolt Size

(10) M11 x 2 x 100, (5) M8 x 1.25 x 45

Head Gasket P/N

12622033

Head Gasket Compressed Thickness

0.055 in.

 

Camshaft Specifications

Camshaft P/N

12623064

Duration @ .050 in. (int./exh.)

198°/216°

Valve Lift (int./exh.)

0.492 in./0.480 in.

Lobe Separation

122.5°

Cam Gear Attachment

1-bolt

Cam Gear Poles

4X

Active Fuel Management (AFM)

No

Variable Valve Timing (VVT)

No

 

Valvetrain Specifications

Lifter Style

Hydraulic roller

Lifter Link Style

Plastic lifter tray

Lifter Body Dia.

0.842 in.

Pushrod Length

7.325 in.

Pushrod Diameter

0.3125 in.

Rocker Arm Mounting Style

Pedestal

Rocker Arm Style

Die-cast, roller fulcrum

Rocker Ratio

1.7

Rocker Offset

Intake only

Valve Spring Style

Beehive

Valve Spring Seat Pressure

90 lbs. @ 1.800 in.

Valve Spring Open Pressure

295 lbs. @ 1.250 in.

Valve Spring Color

Natural

Valve Angle

12 degrees

Intake Valve Material

Stainless Steel, Hollow Stem

Intake Valve Dia.

2.165

Exhaust Valve Material

Stainless Steel, Solid Stem

Exhaust Valve Dia.

1.590

Timing Chain P/N

12646386

Timing Chain Guide Style

Spring Loaded Tensioner

 

Supercharger Specifications

Model

CTS-V

ZL-1

Supercharger P/N

19303635 (solid coupler)

12670278 (spring loaded coupler)

Displacement

1.9L

Rotor Twist

160 Degree

Pulley Diameter 

3.000 in. upper / 7.800 in. lower

Lid Height

Standard

0.750 in. Taller

Intercooler Brick

Standard

Large

Intercooler pump

Standard

Large

 

Other Specifications

Intake Manifold

Cast Aluminum (with integrated intercooler)

Throttle Body

87mm

Throttle Control

Electronic (Drive-by-Wire)

Fuel Injector P/N

12598646

Fuel Injector Flow

52 lb/hr @ 58 psi

Flex Fuel Capable (E-85)

No

Fuel Injector Length (between O-rings)

1.500 in.

Fuel Injector Connector

EV6 / USCAR

Camshaft Sensor Location

Timing Cover

Oiling System

Wet Sump

Oil Pan

Rear Sump (with a bolt-on cooler)

Oil Pump

High Volume

Oil Pump Pressure

1.25 ci/rev, 33 psi