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|V10 Engine Specifications|
488 cid 90' V-10 OHV
|Bore & Stroke||
4.00 x 3.88 in. (101.6 x 98.6 mm.)
488 cu.in. (8.0 L)
310 hp @ 4100 rpm
450 ft. lbs. (617 N.m) @ 2400 rpm
Pressure Feed - Full Flow Filtration
(Direct Crankshaft Driven Pump )
|Engine Oil Capacity||
7.0 Qts. (6.6 L)
Liquid Cooled - Forced Circulation
21.75 Qts. (20.5 L)
Nodular Cast Iron
Wedge - High Swirl
Nodular Cast Iron
Cast Aluminum Alloy
|Spark Plugs: 14mm thread, 19mm reach, 16mm hex wrench, resistor|
|Year||Manufacturer||Part No.||Stock Number||Gap||Notes|
|Camshaft - Nodular Cast Iron|
Diametrical Clearance: No. 1 & No. 3 - No.6 0.0254-0.0762
mm, 0.001-0.003 in
|End Play: 0.127-0.381 mm, 0.005-0.015 in|
|Connecting Rods - Forged Steel|
|Bearing Clearance||0.005-0.074 mm, 0.0002-0.0029 in|
|Piston Pin Bore Diameter||24.940-24.978mm, 0.9819-0.9834 in|
|Side Clearance (two rods)||0.25-0.46mm, 0.010-0.018 in|
|Total Weight (less bearing)||744 grams, 26.24 oz|
|Crankshaft - Nodular Cast Iron|
End Play . . . . . . . . . . . . . . . . . . . . . . . 0.051-0.432
mm, 0.002-0.017 in
Main Bearing Journals
|Stem to guide clearance
|Guide Diameter (std) 0.313 - 0.314 inch|
|Face angle||45 degrees||45 degrees|
|Seat Angle||44.5 degrees||44.5 degrees|
|Seat Width||0.040-0.060" (1.016-1.524mm)||0.040-0.060" (1.016-1.524mm)|
|Head Diameter||1.915-1.925 inch
|Length Overall||5.716-5.741 inch||5.730-5.755 inch|
|Stem diameter||0.311 - 0.312 inch||0.311 - 0.312 inch|
|Lift (Zero Lash)||0.390 inch||0.407 inch|
|Push Rod Length||
General engine notes:
The 8.0L 488 CID ten cylinder engine is a V-type, lightweight,
single cam, overhead valve engine with hydraulic roller tappets. This engine
is designed to run on unleaded fuel with a minimum octane rating of 87. Engine
lubrication system consists of a rotor type oil pump mounted in the timing chain
cover and gear driven by the camshaft. Oil is pumped through a full flow oil
filter and feeds a main oil gallery, which then feeds oil to the main, rod and
camshaft bearings . Passages in the cylinder block feed oil to the hydraulic
lifters, which then suppl;y oil to the rocker arms through hollow pushrods.
The cylinders are numbered from from to rear, with cylinders 1, 3, 5, 7, 9 on
the left side and 2, 4, 6, 8, 10 on the right side.
Cast iron alloy heads are held in place by 12 bolts. The spark plugs are located in the peak of the wedge between the valves.
Die cast magnesium valve covers reduce noise and provide a better sealing surface. The valve cover gasket is reusable. Valves are arranged in-line and and inclined 18 degrees. Rocker pivot supports and valve guides are cast integral with the heads.
Pistons are elliptically turned so that the diameter of the pin boss is less than the diameter across the thrust face. This allows for expansion under normal operating conditions. When the piston warms to operating temperature, expansion forces the the pin bosses away from each other, causing the piston to assume a more nearly round shape. All pistons are machined to the same weight regardless of size, to maintain piston balance. The piston pin is pressed into the connecting rod. All pistons have a special dry film coating baked onto the piston skirts to reduce friction.
The multi-point fuel injection system consists of an electric fuel pump, fuel pressure regulator, and fuel filter, all mounted in the fuel tank; fuel tubes/lines/hoses between the tank and engine; fuel rail on the engine; fuel injectors on the intake manifold; accelerator pedal and throttle cable assembly. A separate fuel return line from the engine to the fuel tank is not used on the V-10. The fuel tank features a pressure relief/rollover valve and a pressure/vacuum fuel filler cap. Also considered part of the fuel system is the evaporative emission control system, which is designed to reduce fuel vapor emissions from the fuel system.
The PCM monitors various input signals from engine sensors, and then feeds its response to the engine control devices. The PCM operates in two modes: Open Loop and Closed Loop.
The fuel injection has these operating modes:
Last Update: June 19, 2001