LS7 Corvette Mechanical Repair Specs (PDF) - Bakes Online

Print Preview Version 8.0 PubTeX output 2006.06.15:1036 File: C:\DOCUME~1\PCOMPO~1.IGS\LOCALS~1\Temp\.aptcache\2006LS7/tfa01804.dvi User: PComposer Page: 2502006 Y Car GMX245 Corvette7.0L (LS7) Engine Mechanical1. Remove the engine oil filter, and fill with clean engine oil.Notice: Refer to Fastener Notice .2. Install the oil filter.Tighten: Tighten the oil filter to 30 N·m (22 lb ft).3. Locate the engine block left front oil gallery plug (116).4. Install the M16 x 1.5 adapter P/N 509375.8632555. Install the flexible hose to the adapter and open the valve.6. PumpthehandleontheJ 45299 in order to flow a minimum of 1–1.9 liters (1–2 quarts) engine oil. Observe the flowof engine oil through the flexible hose and into the engine assembly.7. Close the valve and remove the flexible hose and adapter from the engine.8. Install the oil gallery plug to the engine.Tighten: Tighten the oil gallery plug to 60 N·m (44 lb ft).9. Top-off the engine oil to the proper level.Description and Operation1538673Crankcase Ventilation System DescriptionA closed crankcase ventilation system is used in order to provide a more complete scavenging of crankcase vapors.Filtered air from the air induction system duct is supplied to the crankcase, mixed with blow-by vapors, and passesthrough a crankcase ventilation metering device before entering the intake manifold. The primary component in thepositive crankcase ventilation (PCV) system is the PCV flow metering device (valve or orifice) . Vacuum changes withinthe intake manifold result in flow variations of the blow-by vapors. If abnormal operating conditions occur, the design ofthe PCV system permits excessive amounts of blow-by vapors to back flow through the crankcase vent tube and into theengine induction system to be consumed during normal combustion. This engine ventilation system design minimizes oilconsumption and significantly reduces the potential for oil ingestion during vehicle limit handling maneuvers.LS7 EngineThe LS7 engine utilizes an integral positive crankcase ventilation (PCV) system which is located in the engine valley coverbeneath the intake manifold. The engine valley cover contains composite oil separating baffles and PCV plumbing. Filteredfresh air is routed from up stream of the throttle plate to the engine oil tank where it mixes with crankcase gasses and ispassed to both engine rocker arm covers. The design of the rocker cover shields rocker arm oil spray thereby reducing thepotential for oil being drawn back into the tank during backflow of the ventilation system. Blow-by vapors are routed fromthe valley cover through a fixed orifice (2.5 mm) within a steel PCV tube, then through a formed nylon hose before enteringthe intake manifold behind the throttle body.Description and Operation558948250 of 272