Check Drive: 2020 Ford Tremendous Obligation lineup delivers energy and extra energy
Arduous work simply obtained slightly simpler due to Ford’s new powertrain line-up for mannequin 12 months 2020.
Ford’s new 7.3-liter V8 fuel engine and its new third era 6.7-liter Powerstroke will not be solely thrilling to drive, they’re delivering best-in-class capabilities throughout a number of automobile lessons.
However what’s energy with out grace? Enter Ford’s all-new heavy-duty 10-speed TorqShift transmission out there in 2020 F-250 Tremendous Obligation during the brand new F-600 chassis cab. On the identical measurement because the TorqShift 6-speed and solely 4 kilos extra, the brand new electronically managed 10-speed provides selectable drive modes and a stay drive energy takeoff provision with a best-in-class 300 lb.-ft. torque with diesel.
Whether or not bolted to the brand new 430-hp 7.3-liter gasoline engine or 475-hp 6.7-liter Powerstroke, the 10-speed TorqShift turned uphill towing on a roughly 6% grade into clean, highly effective and environment friendly work at Ford’s latest media occasion close to Phoenix, Ariz.
But it surely’s the brand new 7.3-liter V8 – nicknamed Godzilla – that’s getting a variety of consideration. Ford’s first pushrod V8 because the mid-nineties is lighter, quicker, extra compact and extra versatile than the Triton V10 it’s changing.
The numbers don’t lie. The retired V10, which ended for mannequin 12 months 2019, weighs in at 617 kilos. The match and trim 7.3-liter muscular tissues in at 587.4 kilos whereas delivering a dyno licensed best-in-class 350 horsepower and best-in-class 468 lb.-ft. of torque. That’s 45 extra horses and 112 extra lb.-ft. than its predecessor. Chassis licensed numbers for Tremendous Obligation pickups under 14,000 kilos GVWR have the 7.3 maxing out at 430 horses and 475 lb.-ft. torque.
“We’re actually happy with the 7.3-liter,” Ford Tremendous Obligation chief engineer Mike Pruitt mentioned whereas standing in entrance of an F-450 dump truck outfitted with the iron block stump puller.
The Windsor-produced 445 cubic inch V8 was designed from the bottom up, Pruitt defined. It’s not solely lighter and extra highly effective than the outgoing V10, it has fewer elements reminiscent of 16 valves and one cam versus 32 valves and 4 cams discovered within the V10.
“We’ve put a variety of thought into the engine about making it bullet-proof, keep-it-simple so we went again to a cam and block design,” Pruitt mentioned. “It’s a a lot smaller, compact engine with fewer elements. We wished that commonality between ourselves in addition to the medium-duty truck and conserving that simplification for upkeep functions which is essential to the fleet enterprise.”
Ford has stepped up oil administration within the 7.3. A variable displacement oil pump reduces friction and cuts parasitic losses whereas piston cooling oil jets assist deal with the warmth. Elevated effectivity retains coming as oil change intervals within the new 7.3 get a formidable bump from 7,500 miles to 10,000 miles over the outgoing V10.
“It has an oil minder so it should monitor the utilization however it should go as much as 10,000 miles between oil adjustments. That’s an enormous benefit to fleet prospects,” mentioned Patrick Hurtrich, Ford’s fuel V8 engine supervisor.
The 7.3’s four-bolt foremost forged iron block is capped by aluminum, high-flow heads with port gasoline injection. Throughout a latest cross-country journey, a 2020 F-250 I drove with the brand new 7.3 and a 3.55 rear axle averaged 15.5 mpg. Gear adjustments for the 10-speed TorqShift had been remarkably clean and obtained the Lariat crew cab up to the mark quick. A vertical show throughout the tachometer signifies present gear.
The brand new 7.3-liter prices roughly $2,zero45 over the 6.2-liter fuel V8 which nonetheless comes customary in 2020 F-250 and F-350 pickups and the F-350 chassis cab.
In case you want extra energy, think about the best-in-class 475-hp third era 6.7-liter Powerstroke diesel, which has 25 extra horses and a further 120 lb.-ft. torque than the earlier iteration.
Ford’s strongest oil burner but can also be paired up with a brand new variable displacement oil pump that helps to maintain that high workhorse lubed up because it maxes out at a class-best 1,zero50 lb.-ft. torque. When passing a gradual driver on an Arizona freeway, the F-250 I used to be in had zero lag. The brand new 6.7 responded like no different factory-produced diesel I’ve pushed and blasted us safely forward in superb time. Such energy doesn’t come low-cost although. Anticipate to shell out roughly $10,500 extra over the 6.2 for the privilege.
That funding can extra shortly repay for those who do extra hauling and towing.
David Ives, Ford’s diesel technical chief, offered us with one in all his favourite classes on diesel effectivity. Whereas testing a Ford 6.7-liter diesel pickup with no load, Ives mentioned it reached a 20% acquire in gasoline financial system over an unloaded Ford 6.2-liter fuel truck. However that hole shortly grew to 40% when each vehicles had been subjected to towing an identical masses.
“For diesel, whenever you put the load on, it will get extra environment friendly thermally. It simply will get higher. It will get happier to drag,” defined David Ives, Ford’s diesel technical chief. “A fuel engine…the extra you load them, the much less happier they get since you’ve obtained to show the enrichment on to maintain the manifolds cool.”
Growing enrichment means working with a much less environment friendly air-fuel ratio. As well as, fuel engines that max out at half the torque of a diesel engine should downshift extra usually and run at greater RPMs to maintain that load transferring at a suitable velocity. The timing may additionally should be retarded to forestall knocking, Ives mentioned.
“You grind by all that math and discover out that your payback interval for those who’re towing with diesel, the quantity of miles it’s a must to drive it earlier than it pays again, is one-fifth versus working them round empty,” Ives defined. “So the payback interval, for those who’re towing, could also be 50,000 miles. You may justify that price since you’re in all probability going to maintain the truck for 150,000 miles or so.”