VT-VX-VU V2 220-225 Models
Engine Mechanical Specification

Chevrolet LS1 Generation III 5.7 Litre V8
Capacity: 5.7Litre or 5665 cc or 346 Ci
Bore x Stroke 99mm x 92mm
Induction Sequential Fuel Injection
Valvetrain: Overhead valves, pushrods, 2 valves per cylinder
Compression ratio: 10.1:1
Firing Order: 1-8-7-2-6-5-4-3
Spark Plug Gap: 1.524mm or 0.06in
Oil Capacity without Filter: 4.5 Litres
Oil Capacity with Filter: 5.0 Litres
VT Maximum power:220KW @5000Rpm
VX-VU Maximum power:225KW @5000Rpm
VT Maximum torque:446NM @ 4400Rpm
VX-XU Maximum torque:446NM @ 4400Rpm
Redline/Cutout: 6200Rpm

Estimate Power of Car RWKW
VT Manual/Automatic: Executive, Berlina,SS, Etc:156RWKW
VX-XU Manual/Automatic: Executives, Berlina, SS, Etc:160RWKW


Construction of Engine
Block: Cast Aluminium
Cylinder Head: Cast Aluminium
Intake Manifold: Nylon Composite
Exhaust Manifold: Cast Iron
Main Bearing Caps: Powder Metal
Crankshaft: Cast iron with undercuts and rolled fillets
Camshaft: Hollow Steel
Connecting Rods: Power Metal

T56 6- speed Manual Transmission
First Gear:2.66
Second Gear:1.78
Third Gear:1.30
Fourth Gear: 1.00
Fifth Gear: 0.74
Sixth Gear: 0.50
Diff Ratio 3.46

 

4-Speed Automatic Transmission ( 4L60E)
First Gear: 3.06
Second Gear: 1.63
Third Gear: 1.00
Fourth Gear: 0.70
Diff Ratio: 3.07


LS1 Specification

 Oil Pressure ( Minimum- Hot)

 41kPa at 1,000 engine Rpm

124kPa at 2,000 engine Rpm

 165kPa at 4,000 engine Rpm

 Oil Type
  For optimum fuel economy, use 110W/30 SJ GF2 engine oil, if this oil unavailable, use SG,SH or SJ grade engine oil with viscosity of 20W/50

 Coolant

 50% water and 50% Dex-Cool conforming to GM6277M specification

 Coolant Capacity

 12 Litres approx

 Automatic Trans Fluid

 5 Litres

 Fuel Capacity

 75 Litres

 Power Steering

 DexronIII
 CAMSHAFT  
 Camshaft End Play

 0.025-0.305mm
 Camshaft Journal Diameter

 54.99-55.04mm
 Camshaft Journal Diameter: Out of Round

 0.025mm
 Camshaft Lobe Lift ( Intake)

 7.43mm
 Camshaft Lobe Lift ( Exhaust)

 7.43mm
 Camshaft runout (Measure at the intermediate Journals)

 0.05mm
 CONNECTING ROD  
 Connecting Rod Bearing Bore Diameter

 56.595-56.525mm
 Connecting Rod Bearing Bore Out of Round (Production)

 0.004mm
 Connecting Rod Bearing Bore Out of Round ( Service Limit)

 0.008mm
 Connecting Rod Bearing Clearance ( Production)

0.015-0.063mm 
  Connecting Rod Bearing Clearance (Service Limit)

 0.015-0.076mm
 Connecting Rod Side Clearance Crankshaft

 0.11-0.51mm
 CRANKSHAFT  
 Crankshaft Bearing Clearance (Production)

 0.018-0.054mm
 Crankshaft Connecting Rod Journal Diameter (Production)

 53.318-53.338mm
 Crankshaft Connecting Rod Journal Diameter ( Service Limit)

 53.308mm
 Crankshaft Connecting Rod Journal Taper ( Production)

 0.005mm (Maxinmum for 1/2 of the Journal Length)
 Crankshaft Connecting Rod Journal Taper ( Service Limit)

0.005mm 
 Crankshaft Connecting Rod Journal Out of Round ( Service Limit)

 0.01mm
 Crankshaft End Play

 0.04-0.2mm
 Crankshaft Main Journal Diamter ( Production)

 64.0993-65.007mm
 Crankshaft Main Journal Diamter ( Service Limit)

 64.993mm
 Crankshaft Main Journal Out of Round ( Production)

 0.003mm
 Crankshaft Main Journal Out of Round ( Service Limit)

 0.008mm
 Crankshaft Main Journal Taper (Production)

 0.01mm
 Crankshaft Main Journal Taper ( Service Limit)

 0.02mm
 Crankshaft Reluctor Ring Runout ( Measure 1.0mm Below the Tooth Diameter)

 0.25mm
 Crankshaft Runout (at Rear Flange)

 0.05mm ( Maximum)
 Crankshaft Thrust Wall Runout

 0.025mm
 Crankshaft Thrust Wall Width (Production)

 26.14-26.22mm
 Crankshaft Thrust Wall Width ( Service Limit)

 26.22mm ( Maximum)
 CYLINDER BORE  
 Cylinder bore diameter

 99.0-99.018mm
 Cylinder Bore Taper Thrust Side

 0.018mm (Maximum)
 CYLINDER HEAD  
 Cylinder Head Engine Block Deck Flatness ( Measured within a 152.4mm area)

 0.08mm
 Cylinder Head Engine Block Deck Flatness ( Measuring the Overall Length of the Cylinder Head)

 0.1mm
 Cylinder Head Exhaust Manifold Deck Flatness

 0.22mm
 Cylinder Head Intake Manifold Deck Flatness

 0.22mm
 Cylinder Head Height ( Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface)

 120.2mm ( Maximum)
 ENGINE BLOCK  
 Camshaft Bearing Bore Diameter

 55.063-55.088mm
 Engine Block Cylinder Head Deck Surface Flatness ( Measured within a 152.4mm area)

 0.08mm
 Engine Block Cylinder Head Deck Surface Flatness ( Measuring the Overall Length of the Block Deck)

 0.22mm
 Engine Block Cylinder Head Deck Height ( Measuring from the Centreline of the Crankshaft to the Deck Face)

 234.57-234.82mm
 Main Bearing Bore Diameter ( Production)

69.871-69.889mm
 Main Bearing Bore Out of Round

 0.5mm
 Valve Lifter Bore Diameter ( Production)

 21.417-21.443mm
 INTAKE MANIFOLD  
 Intake Manifold Cylinder Head Deck Flatness ( Measured at Gasket Sealing Surfaces )

 0.5mm
 OIL PAN/ FRONT/REAR ALIGNMENT  
 Oil Pan to Rear of Engine Block alignment ( at Transmission Bellhousing Mounting Surfaces)

 0.0-0.25mm (Maximum)
 Front Cover Alignment ( at Oil Pan Surfaces)

 0.0-0.5mm
 Rear Cover Alignment (at Oil Pan Surfaces)

 0.0-0.5mm
 PISTON  
 Piston Outside Diameter ( at Size Point)

 98.964-98.982mm
 Piston Out of Round ( Service Limit)

 0.018mm
 Piston to Bore Clearance ( Production)

 0.018-0.054mm
 Piston to Bore Clearance ( Service Limit)

 0.018-0.054mm ( Maximum)
 PISTON RINGS  
 Piston Compression Ring End Gap ( Production-Top) ( Measured in Cylinder Bore)

 0.23-0.38mm
 Piston Compression Ring End Gap ( Production-2nd) ( Measured in Cylinder Bore)

 0.44-0.64mm
 Piston Oil Ring End Gap ( Production ) ( Measured in Cylinder Bore)

 0.18-0.69mm
 Piston Compression Ring End Gap ( Service -Top) ( Measured in Cylinder Bore)

 0.23-0.38mm(Maximum)
 Piston Compression Ring End Gap ( Service -2nd) ( Measured in Cylinder Bore)

 0.44-0.64mm
 Piston Oil Ring End Gap ( Service Limit ) ( Measured in Cylinder Bore)

 0.18-0.69mm ( Maximum)
 Piston Compression Ring Groove Clearance ( Production-Top)

 0.04-0.085mm
 Piston Compression Ring Groove Clearance (Production-2nd)

 0.04-0.08mm
 Piston Oil Ring Groove Clearance ( Production)

 0.01-0.22mm
 Piston Compression Ring Groove Clearance ( Service Limit -Top)

 0.04-0.085mm (Maximum)
 Piston Compression Ring Groove Clearance ( Service Limit -2nd)

 0.4-0.08mm ( Maximum)
 Piston Oil Ring Groove Clearance ( Service Limit)

 0.01-0.22mm ( Maximum)
 VALVE SYSTEM  
 Valve Face Angle

 45 Degrees
 Valve Guide Installed Height ( Measure from the Cylinder Head Spring Seat Surface to the Top of the Valve Guide)

 17.32mm
 Valve Lash

 Net Lash- No Adjustment
 Valve Lift ( Exhaust)

 12.15mm
 Valve Lift ( Intake)

 11.99mm
 Valve Lifter

 Hydraulic Roller
 Valve Margin

 1.25mm (Maximum)
 Valve Rocker Arm Ratio

 1.7:1
 Valve Seat Angle

 46 Degrees
 Valve Seat Runout

 0.05mm ( Maximum)
 Valve Seat Width ( Exhaust)

 1.78mm
 Valve Seat Width ( Intake)

 1.02mm
 Valve Spring Free Length

 52.9mm
 Valve Spring Installed Height ( Exhaust)

 45.75mm
 Valve Spring Installed Height (Intake)

 45.75mm
 Valve Spring Pressure ( Closed)

 340Nm at 45.75mm
 Valve Spring Pressure ( Open)

 980Nm at 33.55mm
 Valve Stem Clearance ( Production-Exhaust)

 0.025-0.066mm
 Valve Stem Clearance ( Production-Intake)

 0.025-0.066mm
 Valve Stem Clearance ( Service-Exhaust)

 0.093mm ( Maximum)
 Valve Stem Clearance ( Service-Intake)

  0.093mm ( Maximum)