ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.
ZZ454/440 Engine (12498777) Specifications
IR 04AP14
TITLE
PART NO.
19172103
DATE
AUTH
REVISION
SHEET OF
3 21
04AP14
Initial Release - Patrick Risse
N/A
ZZ454/440 Engine Torque Specifications:
Cylinder head bolt /screw .................................................................... Long / Short Bolts
First pass .......................................................................................... 25/20 ft.-lbs. / 34/27 N·m
Second pass .................................................................................... 50/40 ft.-lbs. / 68/54 N·m
Final pass ......................................................................................... 75/65 ft.-lbs. / 102/88 N·m
Distributor bolt/screw ........................................................................... 18 ft.-lbs. / 25 N·m
Engine block oil gallery plug ................................................................ 15 ft.-lbs. / 20 N·m
Engine front cover bolt screw .............................................................. 106 in.-lbs. / 12 N·m
Flywheel bolt/screw ............................................................................. 65 ft.-lbs. / 90 N·m
Intake manifold bolt/screw
First pass .......................................................................................... 10 ft.-lbs. / 14 N·m
Second pass .................................................................................... 25 ft.-lbs. / 34 N·m
Oil filter adapter bolt/screw
.................................................................. 18 ft.-lbs. / 25 N·m
Oil level indicator tube bolt/screw ........................................................ 106 in.-lbs. / 12 N·m
Oil pan assembly bolt/screw ................................................................ 18 ft.-lbs. / 25 N·m
Oil baffle nut
........................................................................................ 30 ft.-lbs. / 40 N·m
Oil pan drain plug ................................................................................ 15 ft.-lbs. / 20 N·m
Oil pump bolt/screw to rear crankshaft bearing cap ............................ 66 ft.-lbs. / 90 N·m
Oil pump cover bolt/screw ................................................................... 106 in.-lbs. / 12 N·m
Spark plug ........................................................................................... 22 ft.-lbs. / 30 N·m
Starter motor bolt/screw ...................................................................... 35 ft.-lbs. / 48 N·m
Valve lifter guide retainer bolt/screw .................................................... 18 ft.-lbs. / 25 N·m
Water pump bolt/screw ........................................................................ 30 ft.-lbs. / 40 N·m
Note: These torque values are in addition to those documented within the short block instructions.
Component Information:
Cylinder heads:
The ZZ454/440 engine comes with fully assembled cylinder heads, GM Part Number 12363392. These cylinder heads are
aluminum, oval port heads with 110cc combustion chambers, 2.19" stainless steel intake valves, and 1.88" stainless steel
exhaust valves.
Cylinder Head Installation:
Installation is the same as for original equipment cylinder heads. Be sure to thoroughly clean the surface of the block and the
surface of the cylinder head prior to installing. Apply liquid Teflon to all head bolts that protrude into coolant passages. Tighten
the bolts alternately per the sequence and pattern shown below. Apply torque in 25 ft.lb. increments over two repetitions with
the third repetition to the final tightening specification. A re-torque of the cylinder head bolts is recommended after heat cycling
the engine.