New Product Information for Chevrolet Corvette 2008
New Product Information 6.2L
The purpose of New Product Information is to highlight, or indicate, important product changes from the previous model year.
Changes may include 1 or more of the following items:
| • | Torque values and/or fastener tightening strategies |
| • | Changed engine specifications |
| • | New sealants and/or adhesives |
| • | Disassembly and assembly procedure revisions |
| • | Engine mechanical diagnostic procedure revisions |
| • | New special tools required |
| • | A component comparison from the previous year |
Torque Values and/or Fastener Tightening Strategies
| • | All fasteners and threaded holes on the LS3 engine utilize metric threads. |
| • | Certain fasteners should not be used again. Bolts, studs, or other fasteners that must be replaced, will be called out in the specific service procedure. |
| • | A second design camshaft retainer and bolts are optional. |
| • | The camshaft sprocket is now retained to the front of the camshaft using a single bolt design with a torque and angle tightening strategy. |
New Sealants and/or Adhesives
Sealers and adhesives, as required, are identified within the specific service procedures. Refer to
Adhesives, Fluids, Lubricants, and Sealers
.
Disassembly and Assembly Procedure Revisions
No new disassembly or assembly procedure revisions.
Engine Mechanical Diagnostic Procedure Revisions
All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start
when repairs are necessary. For a detailed explanation, refer to
Diagnostic Starting Point - Engine Mechanical
.
New Special Tools Required
No new tools are required for LS3 service.
A Component Comparison from the Previous Year
| • | The 6.0L RPO LS2 engine has been replaced by the 6.2L RPO LS3. |
| • | The new design intake manifold has non-serviceable cap with acoustic foam added to the top of the manifold to reduce engine noise. |
| • | The cylinder heads are redesigned for improved flow. |
| • | The intake valve rocker arms are off-set 6 mm (0.24 in). |
| • | Second design engines will use a rivet-type plug replacing the coolant air bleed covers located at the top rear of each cylinder head. To properly repair a leaking plug, remove cylinder head from the engine, remove the plug from the cylinder head
and install first design coolant air bleed cover and bolt. |
New Product Information 7.0L
The purpose of New Product Information is to highlight, or indicate, important product changes from the previous model year.
Changes may include 1 or more of the following items:
| • | Torque values and/or fastener tightening strategies |
| • | Changed engine specifications |
| • | New sealants and/or adhesives |
| • | Disassembly and assembly procedure revisions |
| • | Engine mechanical diagnostic procedure revisions |
| • | New special tools required |
| • | A component comparison from the previous year |
Torque Values and/or Fastener Tightening Strategies
| • | All fasteners and threaded holes on the 7.0 liter engine utilize metric threads. |
New Sealants and/or Adhesives
No new sealants, cleaning chemicals, or adhesives. Refer to
Adhesives, Fluids, Lubricants, and Sealers
.
Changed Engine Specifications
No revisions to the engine mechanical specifications. Refer to
Engine Mechanical Specifications
.
Disassembly and Assembly Procedure Revisions
No revised disassembly or assembly procedures.
Engine Mechanical Diagnostic Procedure Revisions
All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start
when repairs are necessary. For a detailed explanation, refer to
Strategy Based Diagnosis
or
Diagnostic Starting Point - Engine Mechanical
.
New Special Tools Required
No new special tools required. Refer to
Special Tools
.
A Component Comparison from the Previous Year
Second design engines will use a rivet-type plug replacing the coolant air bleed covers located at the top rear of each cylinder head. To properly repair a leaking plug, remove cylinder head from the engine, remove the plug from the cylinder head and install
first design coolant air bleed cover and bolt.
