SERVICE MANUAL
CYLINDER HEAD & VALVES
Section 3
NEW STYLE CYLINDER HEAD CHART
Production Part No.
Engine Type
688 833 C2*
Turbocharged
"B" and "C" Engines
680 426 C2*
Turbocharged
"NON-B or C" Engines
680 427 C2*
Naturally Aspirated
Engines.
The old style cylinder head can be identified by
the casting number (see chart) located on top of
the cylinder head at intake side between number
four and five nozzle locations (Refer to Figure 6).
OLD STYLE CYLINDER HEAD CHART
Production Part No.
Engine Type
688 833 C1 *
Turbocharged
"B" Engines
680 426 C1 *
Turbocharged
"NON-B or C" Engines
680 427 C1 *
Naturally Aspirated
Engines.
*NON-SERVICEABLE Part Numbers.
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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