New Product Information. Chevrolet Corvette 2007

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2007 🢒 Corvette 🢒 Engine 🢒 Engine Mechanical - 7.0L 🢒 New Product Information

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.

•	The torque/angle value for the LS7 crankshaft balancer bolt has been revised. Refer to Engine Mechanical Specifications .

New Sealants and/or Adhesives

Cleaning chemicals have been identified for the titanium intake valves and connecting rods. Refer to Adhesives, Fluids, Lubricants, and Sealers .

Changed Engine Specifications

Engine specifications for the LS7 application have been added. Refer to Engine Mechanical Specifications .

Disassembly and Assembly Procedure Revisions

•	Oil draining and filling procedures are unique for the LS7 application. Refer to Engine Oil and Oil Filter Replacement .

•	The piston, pin, and connecting rod are to be serviced as an assembly.

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

•	EN-47812 installer bolt has been developed for use with the EN-47813 front cover alignment, the J 41478 crankshaft front oil seal installer, and the J 41665 crankshaft balancer and sprocket installer. The EN-47812 installer bolt is required due to the increased length at front of crankshaft.

•	EN-47813 front cover alignment has been developed for alignment of the front cover. The EN-47813 is required due to the increased size of the front cover.

•	J-41558-10 crankshaft sprocket remover bolts have been developed for use with the J 8433 two jaw puller and the J 41816-2 crankshaft end protector for crankshaft sprocket removal. The longer bolts are required due to the increased length at front of crankshaft.

•	EN-47971 oil pressure gage adapter has been developed for use with the new design oil filter with internal bypass valve.

•	Refer to Special Tools .

A Component Comparison from the Previous Year

•	The 7.0 liter V8 engine (RPO LS7) is optional in place of the 6.0 liter V8 engine (RPO LS2).

•	The LS7 application has a dry-sump type oiling system with a remote oil tank, a hose assembly from oil tank to oil pan, and a dual rotor oil pump assembly. Refer to Engine Component Description and Lubrication Description .

•	The connecting rods are a titanium alloy design.

•	The intake valves are titanium and the exhaust valves have sodium filled valve stems.

•	The new design oil filter has an internal oil bypass valve in the event the oil filter becomes restricted.

•	A second design crankshaft balancer washer is now used. The second design washer is retained onto the rear face of the crankshaft balancer.

•	A friction washer has been added to the rear face of the crankshaft, between the rear of the crankshaft and flywheel.