Oldsmobile Engines 1995 - Present

Engines 1995 - Present

This is the Aurora DOHC V-8 engine, the A8.

The words "Manufactured by General Motors exclusively for Oldsmobile" appear on the intake manifold's tuned runners.

What CIDS

CID    Years      Bore   Stroke  VIN  Color  Notes
4.0L   '95 -      87mm   84mm                A '95 introduced in '94.
(244)

Engine Performance

Year  CID          CR       HP        Torque
'95   244 (4.0L)   10.3:1   250@5600

Indy Car Engine

	Production Aurora V-8	Indy Aurora V-8
Displacement	4.0 liters (244ci)	4.0 liters (244ci)
Cylinder Angle
	90 degrees	90 degrees
Cylinder Bore Spacing
	102mm	102mm
Valvetrain
	Dual overhead cams	Dual overhead cams
Valves per Cylinder
	4	4
Camshaft Drive
	Chain	Chain
Cylinder Head Material
	Aluminum	Aluminum
Cylinder Case Material
	Aluminum	Aluminum
Cylinder Liners
	Dry iron	Dry iron
Crankshaft Design
	90 degrees	90 degrees
Fuel System
	Sequential EFI	Sequential EFI
Engine Controller
	Delco Electronics	Delco Electronics
Maximum rpm
	6,400	10,500
Horsepower
	250hp @ 5600 rpm	600+ hp
Fuel
	Unleaded gasoline	Methanol
Bore Diameter
	87mm	93mm
Crankshaft Stroke
	84mm	73.4mm
Deck Height
	8.84	8.1
Compression Ratio
	10.3:1	13-15:1
Throttle System
	Throttle Body	Individual Runner
Lubrication System
	Wet Sump	Dry Sump

The Aurora will have white diamond metallic paint with black and gold highlights (sounds like the performance colors of about 28 yrs. ago) with Indy 500 graphics. A power sunroof, 3.71:1 transaxle ratio (included with the Aurora's optional Autobahn package), chrome plated aluminum alloy wheels and Goodyear Eagle P235/60R16 tires rated for sustained 150 mph speed. The non-stock items that will be installed are those mandated by USAC which include a roll bar and a five-point safety harness for the driver and passenger.

[ Thanks to Glenn for this information ]