Houston Chronicle Sunday

’ 13 Ram Heavy Duty trucks: Powerful, refined

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Ram Truck Brand is thinking big at the State Fair of Texas Auto Show. Its display is a towering scalfoldin­g structure with three enormous hanging white curtains spelling out “R- A- M” in black letters as tall as a house.

This looming industrial- looking prop is a fitting backdrop for the new imposing 2013 Ram 2500 and 3500Heavy Duty pickups. “It’s virtually an all- new truck from the frame up,” said Fred Diaz, president

and CEO, Ram Truck Brand, noting the new Heavy Duty trucks are a result of instructio­ns from Chrysler Group CEO Sergio Marchionne — “Boys, go big or go home.”

Ram Heavy Duty bodies sit on re- engineered frames, constructe­d of high- strength steel, including eight separate crossmembe­rs, hydroforme­d main rails and fully boxed rear rails. Teaming with the beefier frames is an improved front and rear suspension system, which significan­tly increases roll stiffness. Bed structures also are strengthen­ed.

A new steering system provides a “precise, on- center feel,” Ram Truck Brand reports, and body noise, vibration and harshness are lessened with improved engine, transmissi­on and body mounts. These include the new applicatio­n of hydromount­s at the C- pillars.

Re- engineered mounts support a new lineup of powertrain­s with serious workhorse grunt. For 2013, the 5.7- literHemi V- 8 engine is available on 3500 models— standard on the 3500 single- rear- wheel pickup, as well as 2500 models. It moves the big trucks with 383 horsepower at 5,600 rpm and 400 lb.- ft. of torque at 4,000 rpm. Bolted to theHemi V- 8 is a six- speed automatic transmissi­on.

Turbo Diesel muscle comes in three versions of the 6.7- liter Cummins I- 6, each mated with a different transmissi­on. One combinatio­n pairs the Cummins with a segment- exclusive six- speed manual transmissi­on. It delivers 350 horsepower at 2,800 rpm and 660 lb.- ft. of torque at 1,500 rpm ( vs. the 2012 model’s 600 lb.- ft.).

Output gets amajor boost with comboNo. 2, partnering the Cummins with a 68RFE six- speed automatic transmissi­on. This version produces 370 horses at 2,800 rpm and 800 lb.- ft. of torque at 1,600 rpm.

The top upgrade matches the CumminsHig­h- Output version with a new Aisin six- speed automatic transmissi­on— aheavy- duty unit thatmanage­s big- time torque. This powertrain’s output is 385 horsepower at 2,800 rpm and a Ram Truck Brand- reported “best- in- class” 850 lb.- ft. at 1,600 rpm.

Another “best- in- class” Cummins advantage the truck maker reports is a 15,000- mile oil- change interval and a 10 percent fuel- economy gain via a new diesel exhaust aftertreat­ment.

Performanc­e, durability and operating costs for the diesel engines are improved with an all- new cooling system providing 25 percent more heat- rejection capacity.

A new front- axle disconnect works with the 4x4 transfer case to boost fuel economy— a manufactur­er- reported up to 1 mile per gallon. Towing and payload capacities haven’t been announced.

The brute engines sit behind fresh- design cross- hair grilles. SLT and new- for- 2013 Tradesman models wear a molded- in blackHex- Link grille. The PowerWagon and Lone Star/ BigHorn editions are fitted with Billet- Perf designs with separate model- specific finishes. The Laramie’s grille has a chrome- finishedHe­x- Perf texture, and the top- line Laramie Longhorn’s grille is dressed up withWaveMe­sh.

Headlamps provide a more- efficient distance and light spread. Standard on Laramie Longhorn and optional on Laramie are new, premium headlamp and taillamp designs. The upgraded headlamp has functional halogen projectors, 15 amber LEDs for park/ turn/ position and three LEDs for the side marker. The upscale taillamp stop/ tail/ turn functions consist of 15 red LEDS with a trio of red LED side markers.

Adding convenienc­e, RamBoxes can be locked, along with the doors and tailgate, with a single push of a remote button.

Along with “stop- youdeadin- your- tracks looks,” Diaz said, “the newHeavy Duty is now a smarter truck.”

The 2013Heavy Duty pickups are available with next- generation­Uconnect Access. TheUconnec­t system provides in- vehicle, hands- free communicat­ion and entertainm­ent systems. This includes a wireless platform allowing for Wi- Fi hotspot capability. Connected services can be managed via the web or on the Ram’s 8.4- inch touchscree­n.

Owners also can keep tabs on their trucks’ various systems with an available customizab­le 7- inch vehicle informatio­n center. On both the 8.4- inch and select 7- inch screens, the background­s are tailored to match the themes of specific Ram models.

Designers pulled Ram 1500 refinement into the Heavy Duty pickups, with a redesigned interior featuring improved fit and finish, material upgrades, new color choices and moreuserfr­iendly redesigned HVAC controls.

Diaz said the 2013 Ram Heavy Duty pickups are well- rounded, boasting refined interiors and exteriors, and smart technologi­es. Of course, the other big component is “best- in- class” workhorse capability, he said, because “You can’t be all hat and no cattle.”

 ?? PHOTO COURTESY OF RAM TRUCK BRAND ?? New 2013 Ram Heavy Duty pickup grilles are redesigned, and headlamps are more efficient.
PHOTO COURTESY OF RAM TRUCK BRAND New 2013 Ram Heavy Duty pickup grilles are redesigned, and headlamps are more efficient.
 ?? TIM SPELL ??
TIM SPELL
 ??  ?? This top- line 2013 Laramie Longhorn Heavy Duty packs 6.7- liter Cummins Turbo Diesel grunt. Mated with the new Aisin six- speed automatic transmissi­on, the High- Output version cranks out 850 lb.- ft. of torque.
This top- line 2013 Laramie Longhorn Heavy Duty packs 6.7- liter Cummins Turbo Diesel grunt. Mated with the new Aisin six- speed automatic transmissi­on, the High- Output version cranks out 850 lb.- ft. of torque.
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