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2008 Chevy Silverado Dodge Ram Ford F-350 - Ultimate Tow-Rig Test

A Real-World Comparison Of The Big Three's New-For-'08 1-Ton Diesels

Photography by Drew Hardin, Frank Kaisler

It May Seem Strange To Describe A 1-ton truck as carlike, but the Chevy was the most carlike on the test. Its 6.6L Duramax diesel produced the most top-end horsepower, so much so that we called it the "hot rod" of the test. Dyno pulls confirmed our seat-of-the-pants impression: The Chevy's 294 rear-wheel horsepower easily bested the Dodge's 283 and Ford's 277. We also found that the truck's independent front suspension gave it nice road manners, with a smooth ride and precise handling.

Those same traits, though, can also be negatives. While its high-speed power was good, the Duramax felt like it lacked the bottom-end grunt offered by the others. Again, the dyno confirmed our feelings, with the Duramax's 487 lb-ft of peak torque lower than the 500-plus produced by the others. Our acceleration tests were another indicator: The Chevy was quicker unloaded, but the Dodge beat it pulling the trailer.

And it will probably come as no surprise that the Chevy's IFS proved to be a weak spot off-road, hampering the truck's ground clearance and, in one judge's opinion, its on-dirt handling. Also impeding its off-road performance were low-hanging framerails and the Chevy's street-oriented (and too small) LT225/75R17 General Grabber tires.

We also had a problem with the Chevy's outside mirrors. While big, vertical trailering mirrors are available on the truck, ours was fitted with the standard mirrors, a real head-scratcher given all the other trailering equipment loaded on this rig.

The Chevy proved to be a good towing platform. It was stable on- and off-road, it had plenty of power, and its Allison six-speed transmission was well matched to the Duramax. Its tow/haul mode kept the engine speed where we wanted it, except through long downhill stretches, where it wouldn't hold its speed without help from the brakes.

Front-seat passengers will find the Chevy inviting, with supportive seats and plenty of room. Back-seat passengers, on the other hand, will suffer from seats that are too firm and too upright, though there is plenty of room back there, too. We all felt the Chevy's dash and controls were a little too complicated and hard to use.

Though it sounds like we found a lot to dislike about the Chevy, the whole is actually a better truck than the sum of its parts. When asked which of the three trucks they'd like to own, two of the three judges chose the Chevy because of its power, ride quality, interior comfort, and "rugged and burly" styling.

Engine notes: Modifications to this (LMM) version of the Duramax included new fuel injectors to improve atomization, a ceramic-type diesel particulate filter system to reduce particulate emissions, and a change to the turbocharger's compressor bore to improve its durability.

Likes
* Horsepower
* Ride & handling
* Comfortable front seats

Dislikes
* IFS
* Tiny rearview mirrors
* Uncomfortable back seats

Verdict
The most carlike of these trucks, which is good and bad.

GENERAL
Manufacturer Chevrolet
Model Silverado 3500
  4WD Crew Cab LTZ
Base Price $40,390
Price as Tested $52,430
Options as Tested 6.6L Duramax
diesel, Allison six-speed automatic transmission, LTZ Equipment Group (10-way power heated bucket seats; leather seating surfaces; dual-power heated mirrors; Bose premium sound system; heated washer fluid system; remote vehicle start; HD trailering equipment; locking rear differential; steering-wheel radio controls; power locks and windows; inside mirror with auto dimming, compass, and temperature; rear audio controls; bodyside moldings; leather-wrapped steering wheel; remote keyless entry; illuminated vanity mirrors; electronic shift transfer case), power sliding rear window, power sliding sunroof, power adjustable pedals, brake controller, dual 125-amp alternators, off-road skidplates, EZ Lift tailgate package, cargo management system, ultrasonic rear parking assist, AM/FM/CD with MP3 playback, radiator cover, luggage rack/side rails, destination charge
ENGINE
Type Duramax V-8
Displacement (liters/ci) 6.6/403
Bore & Stroke (inches) 4.06x3.9
Compression Ratio 16.8:1
Induction Type Direct-injection
  diesel with common rail
Fuel Req. Ultra-low-sulfur diesel
SAE Peak Hp 365 @ 3,200 rpm
SAE Peak Tq (lb-ft) 660 @ 1,600 rpm
Measured Hp 294 @ 3,200 rpm
Measured Tq (lb-ft) 487 @ 3,100 rpm
Fuel Tank Capacity (gal) 34
TRANSMISSION
Type Allison 1000
Ratios First: 3.10; Second: 1.81;Third: 1.41; Fourth: 1.00; Fifth: 0.71; Sixth: 0.61; Reverse: 4.49
TRANSFER CASE
Type Two-speed, part-time
Low-range Ratio 2.69:1
AXLES
Front type IFS
Rear type Solid
Ratio 3.73:1
SUSPENSION
Front Short/long arm w/torsion bar
Rear Live axle with leaf springs
STEERING
Type Power-assisted recirculating ball, variable ratio
WHEELS
Size (inches) 17x6.5
Material Chrome-plated steel
TIRES
Size LT225/75R17
Brand General Grabber AW
BRAKES
Front Disc with ABS
Rear Disc with ABS
DIMENSIONS (INCHES)
Wheelbase 167
Overall Length 258.7
Overall Width 95.9
Overall Height 76.1
Ground Clearance 7.25
CAPACITIES (POUNDS)
Advertised GVWR 11,400
Curb Weight 7,371
Payload Capacity 4,029
Tow Capacity 13,000
MILEAGE
Average over Test (mpg) 11.41
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