Publicidad
Idiomas disponibles
Idiomas disponibles
Lubrication System
Oil is applied under pressure to the crankshaft, connecting rods, balance shaft assembly, camshaft bearing surfaces, rocker arms,
valve lash adjusters and timing chain hydraulic tensioner. All other moving parts are lubricated by gravity flow or splash. Oil enters
the oil pump through a fixed inlet screen. The oil pump is driven by the balancer shaft assembly's sprocket. The oil pump body is
attached to the rear of balancer shaft assembly. The pressurized oil passes through the cylinder head assembly restrictor orifice
into the cylinder head's oil control valves (OCV) and routed through passages cast into the camshaft cover assembly to each
camshaft feed gallery and camshaft drip rail. The oil filter is a metal canister type. A by-pass valve in the filter assembly allows
continuous oil flow in case the oil filter should become restricted. Oil then enters the gallery where it is distributed to the balance
shafts, crankshaft, camshafts and camshaft timing chain oiler nozzle. The connecting rod bearings are oiled by constant oil flow
passages through the crankshaft connecting the main journals to the rod journals. A groove around each upper main bearing
furnishes oil to the drilled crankshaft passages. Cast passages feed each hydraulic element adjuster and drilled passages feed
each camshaft bearing surface, rocker arm, and drip rail. An engine oil pressure sensor is located in the block under the intake
manifold. Oil returns to the oil pan through passages cast into the cylinder head. The timing chain lubrication drains directly into
the oil pan.
The oil pump is a dual stage oil pump controlled by an electrical solenoid that is controlled by the ECM. With the engine oil
pressure control solenoid commanded Off, engine oil pressure is higher. When commanded On engine oil pressure is lower. .
Engine control kit p/n 19328839 is available through your Chevrolet Performance dealer and contains a flashed ECM and engine
harness to provide this function if desired by the customer.
The oil system schematic is shown below.
Vacuum Pump
The engine has a vacuum pump that is driven off the back of the exhaust cam. This pump can be plugged or can be used to
supplement the brake system vacuum with a one way check valve provided by the customer. The pump installation is illustrated
below showing the port pointing up.
vacuum port
19328838
3
24
LTG Crate Engine
IR 24OC14
TITLE
PART NO.
SHEET
OF
Publicidad
