Dimensions and capacities are in inches unless otherwise
specified.
Engines |
Vortec
4200 4.2L I-6 |
Vortec
5300 5.3L V-8 |
Application |
standard |
optional |
Type |
4.2L inline 6 |
5.3L V-8 |
Displacement (cu in / cc) |
256 / 4160 |
325 / 5328 |
Bore & stroke (in / mm) |
3.66 x 4.01 / 93 x 102 |
3.78 x 3.27 / 96 x 92 |
Block material |
cast aluminum |
cast aluminum |
Cylinder head material |
cast aluminum, A356-T6
using lost foam process
|
cast aluminum |
Valvetrain |
DOHC, 4 valves per cylinder,
variable valve timing exhaust cam
|
OHV, 2 valves per cylinder |
Ignition system |
coil-on-plug, dual platinum
electrodes |
coil-near-plug, platinum-tipped
spark plugs, low-resistance spark plug wires |
Fuel delivery |
sequential fuel injection |
sequential fuel injection |
Compression ratio |
10.1:1 |
9.5:1 |
Horsepower (hp / kw @ rpm) |
275 / 205 @ 6000 |
300 / 224 @ 5200 |
Torque (lb.-ft. / Nm @ rpm) |
275 / 373 @ 3600 |
330 / 447 Nm @ 4000 |
Recommended fuel |
87 octane |
87 octane |
Maximum engine speed (rpm) |
6300 |
5900 |
Emissions controls |
3-way catalytic converter,
positive crankcase ventilation, evaporative collection
system |
3-way catalytic converter,
exhaust gas recirculation, positive crankcase ventilation,
evaporative collection system |
MPG (city / hwy / comb) |
FWD: 16 / 21 / 18 |
FWD: 15 / 19 / 17 (preliminary) |
AWD: 15
/ 21 / 18 |
AWD: 14
/ 18 / 16 (preliminary) |
MPIG (city / hwy / comb) |
AWD: 18
/ 27 / 21 |
AWD: 17
/ 25 / 20 |
L/100km (city / hwy /
combined) |
AWD: 15.6
/ 10.6 / 13.3 |
AWD: 16.4
/ 11.4 / 14.1 |