Additional technical information on gen 4 5.0L V8?

[JExpedition07]

This thread is for compiled information on the generation 4 5.0L V8 in the F-150. Edited 8/5/2023. Updates include a larger 87mm throttle body, larger intake manifold, new camshafts, as well as new pistons and connecting rods. Information is dispersed throughout the posts and links, feel free to add!

Sponsored

 

[JExpedition07]

https://www.cjponyparts.com/resources/coyote-engine-generations

https://www.motortrend.com/how-to/depth-look-evolution-coyote-engine/amp/

A few good reads, not much about the 4th gen yet even for the 2021+, but alot is likely carried over from the 3rd gen. I watched a video on YouTube, our camshafts, throttle body, intake are all new as well as the variable displacement tech.

 

[gagliano7]

I also seen a video where the use a kevlar belt for the oil pump.

 

[gagliano7]

Not all the stuff is this video is correct but they do go over the 5.0 changes.

 

[XLT22]

I also seen a video where the use a kevlar belt for the oil pump.

The 2.7 has had that since inception in 2015. I never saw or even heard of a failure before leaving Ford in 2021.

 

[gagliano7]

The 2.7 has had that since inception in 2015. I never saw or even heard of a failure before leaving Ford in 2021.

Good to know. Thanks

 

[JExpedition07]

Here is a video explaining the cylinder deactivation. Looks like a well thought out design the way the cam/CD assembly comes out as a unit. Seems like an easier design to work on and a better design for reliability than the pushrod motors like GM and Ram. No head off repairs would be required on this OHC style, and issues seem unheard of so far.

 

[GEN14OWNER]

Take a look for yourself...

https://www.f150gen14.com/forum/threads/inside-your-2021-5-0-at-3500-miles.8526/

 

[dmac]

https://cararac.com/blog/ford-1-5-ecoboost-dragon-engine-problems-durability.html

As long as there have been no complaints from the 1.5L 3cyl Ecoboost about reliability due to cylinder deactivation (similar system), I think we can be pretty confident in the 5.0s CD, aside from maybe a slight delay in power on rair occasion.

Id think 2.5 liters for a truck vs 1 liter for a bronco sport seems about right. Time will tell.

 

[JExpedition07]

Does this beast have two different serpentine belts? Look at this, I see both a fat belt and a skinny one:

 

[HeadBanger]

Take a look for yourself...

https://www.f150gen14.com/forum/threads/inside-your-2021-5-0-at-3500-miles.8526/

That was some good reading!

 

[JExpedition07]

Good reference from Ford Performance:

https://performanceparts.ford.com/download/PDFS/Coyote Technical Reference2.pdf

 

[JExpedition07]

By the way this material does confirm our engines have the same sinter forged connecting rods found in the gen 1 Boss 302 RoadRunner engine, that was one of my big questions. Probably part of the reason our motors are good to spin up to 7,000 rpm. For gen 3+ the short block is the same between the Mustang and F-150 with the same pistons. Only the camshafts and intake manifold vary unlike the older coyotes where they were two different engines.

 

[JExpedition07]

Another little deep dive by MotorTrend into the F-150 vs Mustang

https://www.motortrend.com/how-to/5-0-coyote-engine-ford-f-150-mustang-gt-comparison?slide=4

 

[sbi]

Pardon my ignorance, so what "gen" do I have in my 2021 F-150, 3 or 4?

And yes, joining @OP, I would love to have some more detailed info about this engine. The material above is for the previous generation I believe.

 

[JExpedition07]

@sbi It’s hard to pin down. Some call it gen 3 still, like an updated gen 3, and some call it gen 4. There are certainly updates from the 2018-2020 version, but a lot also remains the same. For one our throttle body is larger (87mm vs 80mm) and our cams actually have reduced lift from the OG 3rd gen to accommodate more low end torque. Our engine (21+) also is capable of a lot more RPM in stock form. From my understanding the Kevlar belt driven oil pump is safer for high revs, so that is why our engines can redline at 7,000 from the factory instead of 6,000 rpm. We also have a new intake manifold as well. Fords engineers stated they torture tested the 2021+ 5.0L at 1,100 horsepower and the engine passed with flying colors. The old cast oil pump gears were a weak point at high revs, so Ford eliminated that design.

Comparing the 2018-2020 to our 14th gens our engines actually have both more low end torque and more top end horsepower. The 18-20 made 400 lb ft @4500, the 21+ makes 410 lb ft @4250. Power is also up to an even 400 horsepower over the previous 395 of the OG 3rd gens. They accomplished this with the reduced lift on the lobes and allowing ours better induction with the throttle body/ manifold update. We still have the plasma arc transfer cylinder liners which keeps the 307 cubic inch displacement. I have read that the oil control rings are also new.

To be honest with you it’s not easy to find info on either the 3.5 EcoBoost or 5.0 Coyote regarding the updates that were done for the 14th gen F-150.

Sponsored