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LS7 Vortec 7.0L
V8 "GEN IV"
Vehicle Applications
- 2006–2013 Chevrolet Corvette Z06
- 2014–2015 Chevrolet Camaro Z28
Product
Highlights
- Gen
IV Aluminum Cylinder Block
- Rectangular Port Aluminum Cylinder Heads
- Advanced
Electronic Throttle Control
- 58X Ignition Systems
LS7
Engine Specs (VIN "E")
The information listed here is for a stock engine.
|
Performance Specifications |
|
| Compression Ratio | 11 : 1 |
| Horsepower Rating | 505 hp. @ 6300 rpm |
| Torque Rating | 470-481 ft./lbs.@ 4800 rpm |
|
Application Information |
|||
|
VIN 8th Digit |
Year |
Make |
Model |
|
E |
2006-13 |
Chevrolet |
Corvette Z06 |
|
2014-15 |
Camaro Z28 |
||
|
Engine Block Specifications |
|
| Casting Number |
12598723 |
| Material |
319-T7 aluminum |
| Displacement |
7.0L / 427 c.i.d. |
| Cylinder liners |
Pressed in, 5.850 in. long (vs. standard 5.500 in.) to support longer stroke |
| Bore |
4.125 in. |
| Stroke |
4.000 in. |
| Deck Height |
9.240 in. |
| Bore Spacing |
4.400 in. |
| Thrust Bearing Location |
#3 Main |
| Main Cap Style |
Doweled, 6-bolt, billet steel (1141 alloy) |
| 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 |
|
Rotating Assembly Specifications |
|
| Piston Material |
M142 cast aluminum alloy (with anti-friction coating and anodized top ring groove) |
| Piston Style |
Flat top, with valve reliefs |
| Piston Volume |
+7cc |
| Wrist Pin Dia. |
0.925 in. (Full Floating) |
| Connecting Rod P/N |
12586258, 126318172, 12661677 |
| Connecting Rod Material |
Titanium |
| Connecting Rod Style |
I-beam, with tapered small end |
| Connecting Rod Length |
6.067 in. |
| Connecting Rod Housing Bore |
2.225 in. |
| Connecting Rod Bolts |
M9 x 1 x 40 |
| Connecting Rod Weight |
464 grams |
| Crankshaft Material |
Forged 4140 steel (early), Forged 44MNSIVS steel (late) |
| Crankshaft P/N |
12611649 (2006-11), 12641692 (2012-15) |
| Crankshaft Weight |
56.40-57.65 lbs. |
| Crankshaft Main Journal Dia. |
2.559 in. |
| Crankshaft Rod Journal Dia. |
2.100 in. |
| Reluctor Wheel |
58X |
|
Cylinder Head Specifications |
|
| Casting Number |
12578452 |
| Material |
356-T6 Aluminum |
| Combustion Chamber Volume |
70cc, CNC-ported |
| Intake Port Shape |
Raised square port, CNC-ported |
| Intake Runner Volume |
259cc |
| Exhaust Port Shape |
D-port, CNC-ported |
| Exhaust Runner Volume |
86cc |
| Valve Seat Material (int./exh.) |
PMF 28 / Brico 3220 |
| Cylinder Head Bolt Style |
Torque to Yield (TTY) |
| Cylinder Head Bolt Size |
(10) M11 x 2 x 100, (5) M8 x 1.25 x 45 |
|
Camshaft Specifications |
|
| Camshaft P/N |
12638426 |
| Duration @ .050 in. (int./exh.) |
210°/230° |
| Valve Lift (int./exh.) |
0.593 in./0.589 in. |
| Lobe Separation |
120.5° |
| 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 (with ceramic check ball for high rpm operation) |
| Lifter Link Style |
Plastic lifter tray |
| Lifter Body Dia. |
0.842 in. |
| Pushrod Length |
7.750 in. |
| Pushrod Diameter |
0.375 in. |
| Rocker Arm Mounting Style |
Pedestal |
| Rocker Arm Style |
Die-cast, roller fulcrum |
| Rocker Ratio |
1.8 |
| Rocker Offset |
Intake only, 9mm total offset |
| Valve Spring Style |
Beehive (LS7 specific) |
| Valve Spring Seat Pressure |
100 lbs. @ 1.960 in. installed height |
| Valve Spring Open Pressure |
310 lbs. @ 1.370 in. open height |
| Valve Spring Color |
Natural |
| Valve Angle |
12 degrees |
| Intake Valve Material |
Titanium, hollow stem (chrome nitride PVD coated) |
| Intake Valve Dia. |
2.205 in. |
| Intake Valve Weight |
77 grams |
| Exhaust Valve Material |
Stainless steel (sodium filled) |
| Exhaust Valve Dia. |
1.610 in. |
| Exhaust Valve Weight |
74 grams |
| Timing Chain P/N |
12646386 (single row chain) |
| Timing Chain Guide Style |
Plastic Wedge Shaped Damper |
|
Other Specifications |
|
| Intake Manifold |
Car-style, square port (LS7 specific) |
| Throttle Body |
90mm, 4-bolt, Silver blade (2006-08), Gold blade (2009-15) |
| Throttle Control |
Electronic (Drive-by-Wire) |
| Fuel Injector P/N |
12576341 |
| Fuel Injector Flow |
42 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 (8-10.5 qt. external tank capacity) |
| Oil Pan |
Shallow center sump |
| Oil Pump |
Standard volume (0.96 c.i./rev.) |
| Oil Pump Pressure |
32.7 psi @ 1,000 rpm |
LS7 Harnesses
