| Engine |
HP |
Torque |
Disp. |
Bore
x
Stroke |
Fuel
Shut-off |
Firing
Order |
Comp.
Ratio |
Materials |
Vortec 4.3
(L35)
Six Cylinder |
200
@
4600rpm |
260
@
2800rpm |
4.3L
262ci
4300cc |
101.6mm
x
88.39mm
4.00"
x
3.48" |
5600 rpm |
1-6-5-4-3-2 |
9:2:1 |
| Block: |
Cast Iron |
Cylinder
Head: |
Cast Iron |
Intake
Manifold: |
Lower:
Cast Aluminum
Upper:
Composite |
Exhaust
Manifold: |
High Silicon
Molybdenum
Cast Nodular Iron |
Main
Bearing
Caps: |
Cast Iron |
| Crankshaft: |
Cast Iron |
| Camshaft: |
Steel |
Connecting
Rods: |
Forged Steel |
|
| Power Graph |
Vortec 4.8
(LR4) |
270
@
5200rpm |
285
@
4000rpm |
4.8L
293ci
4300cc |
96.01mm
x
83.00mm
3.780"
x
3.268" |
5600rpm |
1-8-7-2-6-5-4-3 |
9:5:1 |
| Block: |
Cast Iron |
Cylinder
Head: |
Cast Aluminum |
Intake
Manifold: |
Composite |
Exhaust
Manifold: |
High Silicon
Molybdenum
Cast Nodular Iron |
Main
Bearing
Caps: |
Powdered Metal |
| Crankshaft: |
Cast Iron with undercut Rolled Fillets |
| Camshaft: |
Steel |
|
| Power Graph |
Vortec 5.3
(LM7) |
285
@
5200rpm |
325
@
4000rpm |
5.3L
325ci
5328cc |
96.01mm
x
92.00mm
3.780"
x
3.622" |
5600rpm |
1-8-7-2-6-5-4-3 |
9:5:1 |
| Block: |
Cast Iron |
Cylinder
Head: |
Cast Aluminum |
Intake
Manifold: |
Composite |
Exhaust
Manifold: |
High Silicon
Molybdenum
Cast Nodular Iron |
Main
Bearing
Caps: |
Powdered Metal |
| Crankshaft: |
Cast Iron with Undercut and Rolled Fillets |
| Camshaft: |
Steel |
|
| Power Graph |
Vortec 5.7
(L31) |
255
@
4600rpm |
330
@
2800rpm |
5.7L
350ci
5733cc |
101.60mm
x
88.39mm
4.00"
x
3.48" |
5600rpm |
1-8-4-3-6-5-7-2 |
9:4:1 |
| Block: |
Cast Iron |
Cylinder
Head: |
Cast Iron |
Intake
Manifold: |
Lower:
Cast Aluminum
Upper:
Composite |
Exhaust
Manifold: |
High Silicon
Molybdenum
Cast Nodular Iron |
Main
Bearing
Caps: |
Cast Iron |
| Crankshaft: |
Cast Iron |
| Camshaft: |
Steel |
Connecting
Rods: |
Powdered Metal or Forged Steel |
|
| Power Graph |
Vortec 6.0
(LQ4) |
325
@
5000rpm |
370
@
4000rpm |
6.0L
364ci
5967cc |
101.60mm
x
92.00mm
4.000"
x
3.622" |
5600rpm |
1-8-7-2-6-5-4-3 |
9:4:1 |
| Block: |
Cast Iron |
Cylinder
Head: |
Cast Iron |
Intake
Manifold: |
Composite |
Exhaust
Manifold: |
High Silicon
Molybdenum
Cast Nodular Iron |
Main
Bearing
Caps: |
Powdered Metal |
| Crankshaft: |
Cast Iron with Undercut and Rolled Fillets |
| Camshaft: |
Steel |
Connecting
Rods: |
Forged Powdered Metal |
|
| Power Graph |
