It’s not daily a significant OE manufacturer presents a brand new V8 engine, particularly one that ignites a flame in efficiency fanatics. But last year, Ford Electric motor Company did just that when it released its new 7.3 L gasoline V8 dubbed “Godzilla.” The large V8 is created for Super Duty vehicles as well as creates 430 horse powers at 5,500 rpm and also best-in-class torque with 475 ft.-lb. at 4,000 rpm.
What makes this story most impressive is that Ford went back to a cam-in-block layout with push poles as well as wedge-style heads as opposed to using the modular or Coyote system it’s been establishing for more than 20 years. Actually, it’s been specifically 20 years considering that Ford generated a gasoline-fueled pushrod V8– the last being a 302 with 210 horse power located in the 2001 Explorer.
The 445 cubic inch “Godzilla” is fairly compact for a big-cube block, with dimensions that are just a little bit bigger than a 351W small-block. Godzilla is significantly smaller than the last big Ford V8, the 385-series 460, in every aspect…length, width, and without question, weight.
The brand-new pushrod Ford displaces 445 cubic inches and while it’s not slated for the 2021 Mustang, you can get one from Ford Performance as a pet crate engine for swaps or customized builds and the aftermarket is starting to respond with parts to enhance performance.
Godzilla, as it’s being called, was created as an alternative for F-250-and-up Super Duty versions as a severe-duty engine that’s powerful, sturdy, and inexpensive to build and keep. Interestingly enough, the really includes that make it a strong truck engine obtain us hot rodders fired up, also. We’ve currently seen one make over 700 horse power naturally aspirated and 1,450 horsepower with a supercharger!
With ported heads, aftermarket cam, aluminum rods, forged pistons and a Whipple 3.0L supercharger, this 7.3L made 1,450 horsepower on just 16 psi of boost.
Blaine Ramey, supervisor of large gas as well as diesel engine efficiency growth at Ford Motor Firm said, “When the project kicked off [Brian Wolfe that is currently retired] was the director of worldwide engine design and also we determined to select a brand-new style, one that made the most feeling for clients. We had a clean sheet of paper and this design supplied clients what they were searching for in that segment. Essentially, the 7.3 L fits the heavy-duty market for trucks as well as we wanted to have a typical engine that would certainly cross the board. This will be in dump vehicles, recreational vehicle, and also pick-up trucks. We required a reasonably portable package with inexpensive and also high integrity. It made sense to do a pushrod V8 for cost to the client as well as maintenance.” Ramey, it needs to be noted, is additionally a drag racer with an 8-second Cobra Jet Mustang.
He proceeded, “This engine makes use of whatever that Ford has actually learned [about engine structure] the exact same man who did the 5.0 L as well as the 5.2 L Shelby [GT350] intake port established this engine. It’s new without concession. It is designed to be really rugged with a cast iron, four-bolt primary block with cross bolts, as well as the pistons and also rings are a development of the Eco-Boost layout. There are fewer parts (compared to the DOHC engines) and it’s built in Windsor [Ontario]”.
So what makes this Very Duty truck mill a warm rodder’s desire? Let’s begin with the block. Bore and also stroke are 4.22 in x 3.976 in specifically, which equates to 445 cubic inches (7.3 L) of displacement. “We desired excellent efficiency potential so it has large bores,” included Ramey. “Big bores are additionally helpful for cylinder head flow as well as develops slower piston speed (relative to the stroke) throughout cruise ship modes for better effectiveness. We likewise developed the engine so it can be serviced and also rebuilt in the future. So, for these factors the iron block made the most feeling.” Going 0.030-inch over would certainly provide you 457 dices as well as with a Stroker crank there’s space to internet just approximately 500 cubic inches.
The manufacturing facility crank is a durable built steel device retained with the above mentioned four-bolt primary caps in a deep-skirted block with 2 side bolts per cap. Key journal dimension is 2.66-inches (like the 6.2 L Ford V8) and also the pole journals gauge 2.086-inch (typical to Coyote 5.0 L). The back of the crank (which has 8 bolts) along with the back of the block, is common to Ford modular and also Coyote. Deck height is 9.65 inches and there is a soft cut at the top of the deck surface for coolant flow. The factory utilizes powdered-metal split cap attaching poles that turn cast pistons, but there are great steel and aluminum choices on the market.
The “Godzilla” 7.3L utilizes a deep-skirt iron block with six-bolt main caps. Stock engines have 10.5:1 compression and use cast pistons. The forged steel crankshaft has proven to be good to over 1,400 horsepower. The camshaft has .539/.600 (intake/exhaust) lift.
Unusual to the efficiency market is the chain-driven variable-displacement oil pump. “We used a variable-displacement oil pump to precisely control oil pressure to a target pressure. So generally, we can regulate the pressure relying on driver demand. At still we do not need much pressure, at greater speed or tons we can raise stress to safeguard the engine.”.
The 8-quart oil frying pan is deep and made of actors aluminum, and also some versions include Super Task and Medium duty oil coolers connected on the side of the block but block-off plates to remove the colders are offered from Paul’s High Performance in Jackson, Michigan.
Induction is constantly a hot subject and that’s one location that will certainly require focus for some swaps. The manufacturing facility vehicle engine makes use of a composite consumption manifold with a front-mounted and upswept 80mm throttle body. The place of the TB is not maximum for swaps right into a lot of cars and trucks as hood clearance comes to be a huge problem. However fret not, as aftermarket consumptions are on the way. The 7.3 L “Godzilla” has a completely dry valley, so the intake remains cooler as well as there’s very little opportunity of an oil leakage. The 7.3 L does not presently utilize direct shot, but Ramey claims it can be adopted later on if necessary.
The 7.3L utilizes a chain-driven, variable displacement oil pump, which houses an integrated windage tray. This moves the eight quarts of oil through the engine with precisely-controlled oil pressure based on demand.
As you ‘d expect, the engine has aluminum cylinder heads with all the modern-day features. “We made use of a wedge combustion chamber with a spark plug area that’s enhanced at the facility of the piston dish. This manages the ability to have a greater compression proportion and also it equals better performance and efficiency. We likewise utilize piston-cooling jets that stream oil to the behind of the pistons for cooling to avoid detonation under high tons. Valve dimensions are 2.17 (consumption) and also 1.66-inches on the exhaust; they rest at an 8.8-degree angle and also are canted at 1.8 levels. Camera lift is.539/.600 (13.67 mm/15.26 mm) intake/exhaust specifically and also the cam bore is a big 60mm with 9 journals to restrict deflection.
You’ll additionally keep in mind the beehive valve springtime are extremely high. This was done to suit the high valve lift with reduced springtime tension. “With a tall spring you’re not dispersing the coils as much,” claimed Ramey. “Practically all our engines have evolved to that layout with light-weight retainers”.
The 7.3L uses hydraulic roller lifters and steel rockers, which you can see in this valvetrain cutaway. Valves are 2.17 intake, 1.66 exhaust, at an 8.8-degree angle and 1.8-degree cant in the head. The beehive springs are tall to allow high valve lift with low spring stress.
It also utilizes hydraulic roller lifters with variable shutoff timing with a solitary phase. “It has actually repaired overlap, but you can advance as well as slow down the webcam [on the fly] This gives us the capability to lower pumping loss at low engine rate and throttle position, yet at greater speeds we can change the phasing for much better air flow.
Unlike the 4.6 L 2-, 3- and Four-Valve modular and DOHC 5.0 Coyote engines this is a huge incher, however in a relatively tiny plan. Its 25.5 inches large on top of the shutoff covers, which has to do with two inches broader than a regular 351 Windsor. Its 24 inches long (351W is commonly 22.5 inches) so it will fit in nearly anything where you’d discover a V8. And also with engine swaps being all the rage, it will only refer time before we them in a timeless Fords, late-model Mustangs, and street poles or dare we say, in a GM product.
We anticipate the 7.3 L Godzilla engine will certainly be a hit with efficiency fanatics. With an efficiency consumption, cam as well as tune this would make a wicked choice for any kind of racer or road enthusiast.