Chevrolet 10 series 1973, Overhaul Manual

Page: 143 / 522

6 2 EN G INE
GENERAL DESCRIPTION
IN-LINE ENGINES
Cylinders are numbered front to rear. Firing order is
1-5-3-6-2- 4 for the L6 engines. Crankshaft rotation as
viewed from the rear is counter-clockwise.
The L6 crankshaft has seven main bearings and the
camshaft has four bearings.
Full pressure lubrication, through a full flow oil filter is
furnished by a gear-type oil pump. The distributor,
driven by a helical gear on the camshaft, drives the oil
pump. The main oil gallery feeds oil, through drilled
passages, to the camshaft and crankshaft to lubricate the
bearings. The main oil gallery also feeds the valve lifters
which, through hollow push rods, feed the individually
mounted rocker arms (fig. 1).
V8 ENGINES
Cylinders are numbered front to rear, 1-3-5-7 on the left
bank and 2-4-6-8 on the right bank. Firing order is, 1-8-
4-3-6-5-7-2. Crankshaft rotation as viewed from the rear
is counter-clockwise.
The crankshaft has five main bearings and the camshaft
has five bearings.
Full pressure lubrication through a full flow oil filter, is
furnished by a gear-type oil pump. The distributor,
driven by a helical gear on the camshaft, drives the oil
pump. The main oil gallery feeds oil, through drilled
passages, to the camshaft and crankshaft to lubricate the
bearings. The valve lifter oil gallery feeds the valve
lifters which, through hollow push rods, feed the
individually mounted rocker arms (fig. 2 and 3).
F ig . i—V 8 E n g in e ( T y p ic a l)
OVERHAUL MANUAL