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2012 Jeep Grand Cherokee SRT8 Specifications and Capacities

SRT8-engines.gif
The 2012 Jeep Grand Cherokee SRT8 runs from 0-60 mph in 4.8 seconds, screams from 0-100-0 mph in the mid-16 second range, covers the quarter mile in the mid-13 second range, has a top speed of 160 mph, and brakes from 60-0 mph in 116 feet.

The engine has 16 pushrod-operated overhead valves, with sodium-filled exhaust valves and hollow stem intake valves; they are actuated by 16 conventional hydraulic lifters, all with roller tips. The fuel injection is sequential (each cylinder is uniquely controlled) and returnless (there is no return feed for excess fuel), and the engine has a Fuel Saver (cylinder cutoff) mode. The engine itself has a deep-skirt cast-iron block with cross-bolted main bearing caps, topped by aluminum alloy heads with "hemispherical style" combustion chambers.

Engine


Bore x Stroke



4.09 x 3.72 (103.9 x 94.5) - 392 cubic inches, 6.424 liters



Compression Ratio



10.9:1



Power (est.) (SAE J2723)



470 hp (351 kW) at 6,000 rpm; 465 lb.-ft. (630 N•m) at 4,300 rpm



Max. Engine Speed



6,400 rpm (electronically limited)



Fuel and Oil



Premium 91 octane (R+M)/2 - recommended; 5W-40 synthetic oil



Mileage



12 mpg city, 18 mpg highway (EPA figures)



Assembly Plant



Saltillo Engine Plant, Saltillo, Mexico

Four wheel drive



Transfer Case



MP3010 Single-speed, electronic proportioning (full time 4WD)



Torque Split, Front/Rear



Variable - 50/50 Snow and 35/65 Sport and Track



Front Differential



Conventional



Ring Gear Diameter



7.7 (195)



Rear Axle



3.70:1 ZF Electronic Limited Slip Differential (ELSD)



Ring Gear Diameter



9 (230)



Gear Ratios



3.59, 2.19, 1.41, 1.00, 0.83; reverse, 3.16



Approach Angle, Degrees



18.45



Ramp Breakover Angle, Degrees



17.84



Departure Angle, Degrees



21.9



Minimum Ground Clearance



8.3 (210.8)

Other specs



Alternator



Standard 220-amp



Battery



Group 65 maintenance-free 750CCA



Drag Coefficient



.39



Aero CdA



12.2 (Cd x cross-sectional area)

Front/rear weight distribution54/46
Gross weight rating6,500 lb (2,948 kg)
Curb weight (with full fuel)5,150 lb (2,336 kg)
Payload1,350 lb (612 kg)


Standard Tires



P295/45ZR20 Pirelli Scorpion Verde - All-Season Performance (run flat)



Optional Tires



P295/45ZR20 Pirelli P-Zero - Three Season (run flat)

Axle ratio3.70
Max towing5,000 lb (2,269 kg)
Jeep Grand Cherokee at Allpar


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