Vehicle Applications

• 2009–2013 Chevrolet Corvette ZR1

Product Highlights

• Gen IV Aluminum Cylinder Block
• Rectangular Port Aluminum Cylinder Heads
• Roots Style Supercharger (2.3L Displacement)
  
• Advanced Electronic Throttle Control
• 58X Ignition Systems

LS9 Engine Specs (VIN "T")

Performance Specifications
Compression Ratio	9.1 : 1
Horsepower Rating	638 hp. @ 6300 rpm
Torque Rating	604 ft./lbs.

 

Application Information
VIN 8th Digit	Year	Make	Model
T	2009-13	Chevy	Corvette ZR1

 

 

Engine Block Specifications
Block P/N	12621983, 12623969
Material	319-T7 aluminum
Block Casting Number	12621766
Displacement	6.2L / 376 c.i.d.
Bore	4.065 in.
Stroke	3.622 in.
Deck Height	9.240 in.
Bore Spacing	4.400 in.
Thrust Bearing Location	#3 Main
Main Cap Style	6-bolt, Billet Steel
Main Housing Bore Dia.	2.751 in.
Cam Housing Bore Dia.	Bore 1/5 = 2.346 in. Bore 2/4 = 2.326 in. Bore 3 = 2.307 in.
Cam-to-Crank Centerline	4.914 in.
Piston Oil Squirters	Yes
Head Bolts	M12

 

Rotating Assembly Specifications
Piston Material	Forged aluminum alloy (with anti-friction coating and anodized top ring groove)
Piston P/N	19180414
Piston Style	Dished, without valve reliefs
Piston Volume	+15cc
Wrist Pin Dia.	0.984 in.
Connecting Rod P/N	12624231
Connecting Rod Material	Titanium, Moly-coated
Connecting Rod Weight	452-482g
Connecting Rod Style	I-beam
Connecting Rod Length	5.990 in.
Connecting Rod Housing Bore	2.225 in.
Connecting Rod Bolts	M9 x 1 x 40
Crankshaft Material	Forged Steel, 46MnVS
Crankshaft P/N	12598610 (2009-11), 12641693 (2011-15)
Crankshaft Rear Flange	9-bolt
Crankshaft Snout	Long, with keyway
Crankshaft Main Journal Dia.	2.559 in.
Crankshaft Rod Journal Dia.	2.100 in.
Reluctor Wheel	58X

 

Cylinder Head Specifications
Cylinder Head P/N	12621773
Casting Number	1771
Material	356-T6 Rotocast Aluminum
Combustion Chamber Volume	69.8cc
Intake Port Shape	Rectangle
Intake Runner Volume	259cc
Exhaust Port Shape	D-port
Exhaust Runner Volume	89cc
Valve Seat Material (int./exh.)	PMF28 / Brico 3220
Cylinder Head Bolt Style	Torque to Yield (TTY)
Cylinder Head Bolt Sizes	(10) M12 x 1.75 x 107 (P/N 11610590)
	(5) M8 x 1.25 x 45 (P/N 12558840)
Head Gasket P/N	12622033
Head Gasket Compressed Thickness	0.055 in.

 

Camshaft Specifications
Camshaft P/N	126384277
Duration @ .050 in. (int./exh.)	211°/230°
Valve Lift (int./exh.)	0.562 in./0.558 in.
Lobe Separation	122.5°
Cam Gear Attachment	3-bolt
Cam Gear Poles	4X
Active Fuel Management (AFM)	No
Variable Valve Timing (VVT)	No

 

Valvetrain Specifications
Lifter Style	Hydraulic roller
Lifter Link Style	Plastic lifter tray
Lifter Body Dia.	0.842 in.
Pushrod Length	7.385 in.
Pushrod Diameter	0.3125 in.
Rocker Arm Mounting Style	Pedestal
Rocker Arm Style	Die-cast, roller fulcrum
Rocker Ratio	1.7
Rocker Offset	Intake only
Valve Spring Style	Beehive
Valve Spring Seat Pressure	90 lbs. @ 1.800 in.
Valve Spring Open Pressure	295 lbs. @ 1.250 in.
Valve Spring Color	Natural
Valve Angle	15 degrees
Intake Valve Material	Titanium, with Chrome Nitride
Intake Valve Dia.	2.165
Exhaust Valve Material	Stainless steel, Sodium Filled
Exhaust Valve Dia.	1.590
Timing Chain P/N	12646386
Timing Chain Guide Style	Wedge Shaped Plastic Dampener

 

Supercharger Specifications
Supercharger P/N	19244103 (solid coupler) R2300
Displacement	2.3L
Supercharger drive	2.32 Drive Ratio, 15,080 Rpm, 9.4 Lbs. boost
Rotor Dimensions	4.400 diameter, 8.300 Length, 160 Degree
Pulley Diameter	3.100 in. upper / 7.330 in. lower

 

Other Specifications
Intake Manifold	Cast Aluminum, with integrated intercooler
Throttle Body	87mm
Throttle Control	Electronic (Drive-by-Wire)
ECM	E67
Fuel Injector P/N	12598646
Fuel Injector Flow	52 lb/hr @ 58 psi
Flex Fuel Capable (E-85)	No
Fuel Injector Length (between O-rings)	1.500 in.
Fuel Injector Connector	EV6 / USCAR
Camshaft Sensor Location	Timing Cover
Oiling System	Dry Sump
Oil Pan	Center Sump (with a bolt-on cooler)
Oil Pump P/N	12578147
Oil Pump Volume	32.3 gpm