Jeep SRT8 runs a 10.75 1/4 mile pass

[trev0006]

Jeep SRT8 runs a 10.75 1/4 mile pass, these SUV's are getting pretty fast.

[Magnusen]

Damn... do they have to have the auto built to handle that or are they pretty stout from the factory?

[97talon]

Very very nice jeep.

[01mmmz28]

Originally Posted by Magnusen

Damn... do they have to have the auto built to handle that or are they pretty stout from the factory?

They are beefy in stock form, but that guy is on borrowed time unless he has had a mild build done. He at the very least needs a stall, tranny cooler, shift kit and tuning.

Nice vid, those things are the fastest tanks around.

[ihone]

I'm seriously thinking about trading my truck in, and dropping a few g's on one. They've got the room for me and my small family, plus - it hauls @$$....lol.

[skyline180000]

Here are some specs directly off the dealerconnect website:

BRAKES

SRT8 models utilizes four-wheel disc brakes. All brake calipers are four-piston opposed fixed design manufactured by Brembo®.
All brake rotors are the internal vented type.
Each front brake caliper features four 44 mm pistons, two in each outer half of the caliper. The two outer halves of this caliper connect hydraulically using internal passageways. These calipers are not serviceable. Do not attempt disassembly.
Each rear brake caliper features four pistons also, two in each half of the caliper. Each half has one 28 mm and one 32 mm piston. When mounted, the smaller size (28 mm) piston is located at the top while the larger size (32 mm) piston is located at the bottom. The two halves of the caliper are connected hydraulically by means of an external brake tube located on the bottom of the caliper assembly. Each caliper half has its own bleeder screw at the top and must be bled individually when bleeding is required. These calipers are not serviceable. Do not attempt disassembly.
All SRT8 calipers mount directly to the knuckle. They do not use brake caliper adapters.
The SRT8 rear brake rotors have integrated parking brake drums like the standard rear disc brake system.

TRANSMISSION

The NAG1 automatic transmission is an electronically controlled 5-speed transmission with a lock-up clutch in the torque converter. The ratios for the gear stages are obtained by 3 planetary gear sets. Fifth gear is designed as an overdrive with a high-speed ratio.
NAG1 identifies a family of transmissions and means “N”ew “A”utomatic “G”earbox, generation 1. Various marketing names are associated with the NAG1 family of transmissions, depending on the transmisson variation being used in a specific vehicle. Some examples of the marketing names are: W5A300, W5A380, and W5A580. The marketing name can be interpreted as follows:
W = A transmission using a hydraulic torque converter.
5 = 5 forward gears.
A = Automatic Transmission.
580 = Maximum input torque capacity in Newton meters.
The gears are actuated electronically/hydraulically. The gears are shifted by means of an appropriate combination of three multi-disc holding clutches, three multi-disc driving clutches, and two freewheeling clutches.

The gear ratios for the NAG1 automatic transmission are as follows:

1st Gear-3.59:1
2nd Gear-2.19:1
3rd Gear-1.41:1
4th Gear-1.00:1
5th Gear-0.83:1
Reverse-3.16:1

ENGINE

The 6.1L (370 CID) eight-cylinder engine is a 90° V-Type, deep skirt, lightweight cast iron block with aluminum heads, single cam, overhead valves, and hydraulic roller tappets. The heads incorporate splayed valves with a hemispherical style combustion chamber and dual spark plugs. The cylinders are numbered from front to rear; 1, 3, 5, 7 on the left bank and 2, 4, 6, 8 on the right bank. The firing order is 1-8-4-3-6-5-7-2.

TRANSFER CASE

The NV146 transfer case provides On-Demand Active Four-Wheel Drive for optimum traction in a wide range of conditions and is also used in the Grand Cherokee SRT8 vehicles. The transfer case uses an electronically controlled clutch pack to distribute between 0% and 50% of the available torque to the front axle. The NV146 electronics provide an active system because it can anticipate and prevent slip.

AXLES

FRONT

C200F - 200MM Ring Gear Ratio: 3.73 Open Differential
C200FE - 200MM Ring Gear Ratio: 3.73 ESLD (Electronic Limited Slip Differential)

REAR

226RBI - 226 MM Ring Gear Ratio: 3.73 Open Differential

Unfortunatly the driveshafts are the same across all drivetrains so are the halfshafts in the front. They also suffer from poor aerodynamics and hit a "brickwall" at 150mph. Hope this helps with the tech side of the bone stock SRT8