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ZZ454/440 Engine (12498777) Specifications
IR 04AP14
TITLE
PART NO.
19172103
DATE
AUTH
REVISION
SHEET OF
5 21
04AP14
Initial Release - Patrick Risse
N/A
5. When possible, you should always allow the engine to warm up prior to driving. It is a good practice to allow the oil sump
and water temperature to reach 180°F before towing heavy loads or performing hard acceleration runs.
6. Once the engine is warm, Double check the total advance timing is 26° at 4000 RPM if using the HEI distributor P/N
93440806.
7.
The engine should be driven at varying loads and conditions for the first 30 miles or one hour without wide open throttle
(WOT) or sustained high RPM accelerations.
8.
Run five or six medium throttle (50%) accelerations to about 4000 RPM and back to idle (0% throttle) in gear.
9.
Run two or three hard throttle (WOT 100%) accelerations to about 4000 RPM and back to idle (0% throttle) in gear.
10.
Change the oil and filter. Replace with 5W30 motor oil (not synthetic) and a PF1218 AC Delco oil filter. Inspect the oil and
the oil filter for any foreign particles to ensure that the engine is functioning properly.
11. Drive the next 500 miles under normal conditions or 12 to 15 engine hours. Do not run the engine at its maximum rated
engine speed. Also, do not expose the engine to extended periods of high load.
12.
Change the oil and filter. Again, inspect the oil and oil filter for any foreign particles to ensure that the engine is functioning
properly.
13. Do not use synthetic oil for break-in. It would be suitable to use synthetic motor oil after the second recommended oil
change and mileage accumulation. In colder regions, a lower viscosity oil may be required for better flow characteristics.
ZZ454/440 Engine Specifications:
Compression .......................................................................................9.6:1
Cylinder Head: .....................................................................................Cast aluminum, oval port
Valve Diameter (Intake/Exhaust):
.....................................................2.19"/1.88"
Chamber Volume: ............................................................................110cc
Camshaft ..............................................................................................Hydraulic roller tappet
Lift: ...................................................................................................510" intake, .540" exhaust
Duration: ...........................................................................................
211 Intake, 230 (exhaust @ .050" tappet lift)
Centerline: ...........................................................................................
112 ATDC intake, 112 (BTDC exhaust)
Rocker Arm Ratio: ...............................................................................1.7:1, stamped steel
Oil Pressure (Minimum):
......................................................................
6 psig @ 1000 RPM
....................................................................................................
18 psig @ 2000 RPM
....................................................................................................
24 psig @ 4000 RPM
Recommended Oil: ..............................................................................
5w30 synthetic racing oil (after break-in)
Oil Filter: ..............................................................................................AC Delco part # - PF 1218
Valve Lash ...........................................................................................1/8 turn down from 0
Fuel: ....................................................................................................
Premium unleaded - 92 (R+M/2)
Maximum Engine Speed: ....................................................................5500 RPM
Spark Plugs: ........................................................................................
AC Delco Rapidfire # 4
Spark Plug Gap ...................................................................................040”
Firing Order: ........................................................................................1-8-4-3-6-5-7-2