3.5L EB vs. Supercharged V8

[TexasTruck]

The 5.0 with the mild FP/Whipple SC has more room to grow than a tuned 3.5 EB that is pushing its limits.

This is why I didn't go with the supercharged Coyote.. $10k for that and another $10k in lift/wheels/tires was a bridge too far.

Yeah, I can't lie, it stings...

With the supercharger you know you are getting longtubes and I'm enjoying my first quiet vehicle in a long time.

Not necessarily. My vehicle is still very quiet. The factory exhaust is perfectly suited for an SC application. The canned tunes from the SC makers don't support longtubes, you have to get a custom tune at that point.

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[JExpedition07]

Ya the 5.0 is the only American motor that can make 1000 HP factory sealed at the end of day. The exhaust valves are sodium filled, the rods are strong, the crankshaft is forged, the deck is partially closed. It’s N/A but it’s built just like a forced induction engine. Sky’s the limit even in a sealed crate motor. The FP-700 protects the 10R80 and promises a longer lifespan. I think it’s a good “meet in the middle package” that isn’t stressing the truck. Best domestic V-8 in my opinion

You still cannot deny the 3.5 EcoBoost bang for your buck tuning though. If you want to go really fast on the cheap you can. 500 RWTQ on a canned tune is spectacular.

 

[TexasTruck]

There you are @JExpedition07 Thank you!

 

[TheGoatman]

$10,000 just for the parts…

I think it’s $3,000 to go from a 5.0 to a 7.2kw powerboost.

I mean you end up reasonably close to a raptor r motor that’s a $20,000 up charge from the HO 3.5

 

[22Platinum]

Ya the 5.0 is the only American motor that can make 1000 HP factory sealed at the end of day. The exhaust valves are sodium filled, the rods are strong, the crankshaft is forged, the deck is partially closed. It’s N/A but it’s built just like a forced induction engine. Sky’s the limit even in a sealed crate motor.

 

[Samson16]

I think it’s $3,000 to go from a 5.0 to a 7.2kw powerboost.

And worth every penny ?

 

[Old Hat]

On top of the cost of the blower system, what about reliability? This board recently had a "How many miles on your supercharged V-8 before something blew up" thread. It wasn't comforting. I suppose if you wanna play you gotta pay.

EDIT:

https://www.f150gen14.com/forum/threads/highest-supercharged-mileage.21840/

 

[diambo4life]

On top of the cost of the blower system, what about reliability? This board recently had a "How many miles on your supercharged V-8 before something blew up" thread. It wasn't comforting. I suppose if you wanna play you gotta pay.

EDIT:

https://www.f150gen14.com/forum/threads/highest-supercharged-mileage.21840/

This is a specious statement. That was not the premise of that thread.

 

[diambo4life]

I believe this is their graph from the gen-2 (2015-2017) Coyote with only port injection.

It is but the behavior is virtually identical.

 

[TexasTruck]

On top of the cost of the blower system, what about reliability? This board recently had a "How many miles on your supercharged V-8 before something blew up" thread. It wasn't comforting. I suppose if you wanna play you gotta pay.

I read that thread too, probably read the same stories about melting CATs and blowing engines. What you never really know are all the details leading up to the event.

Is the 3.5 EB reliable? I owned four since 2015, had my share of buy backs for turbo and transmission problems. Does that mean it's a bad engine, heck no, there are thousands and thousands on the road yanking RV's to tim-buck-to and back, logging thousands of trouble free miles.

My goal with the FP/Whipple 5.0 SC was to achieve 3.5 EB (not tuned) like performance and my butt-dyno says it is. I chose the FP/Whipple because it's about as tame as you can get, figuring that's going to give me better reliability than anything else. Time will tell....

 

[JExpedition07]

For the love of God, can I have my late mid life crisis JK.... I read that thread too, probably read the same stories about melting CATs and blowing engines. What you never really know are all the details leading up to the event.

Is the 3.5 EB reliable? I owned four since 2015, three of those were buy backs for turbo and transmission problems. Does that mean it's a bad engine, heck no, there are thousands and thousands on the road yanking RV's to tim-buck-to and back, logging thousands of trouble free miles.

My goal with the FP/Whipple 5.0 SC was to achieve 3.5 EB (not tuned) like performance and my butt-dyno says it is. I chose the FP/Whipple because it's about as tame as you can get, figuring that's going to give me better reliability than anything else. Time will tell....

Now you just need a set of the 2023 STX black bucket headlights to darken up that front end and you have a mean beast

 

[jmelgin83]

Here's my far less than perfect analysis. These charts are based on multiple Dyno inputs that reflect the latter generation engines. I just used my eyeball to try and read each of the Dyno results that many have shared plus a few additional ones I gathered from the internet gods. As a result, the data has some scatter but I think tells a compelling story.

My conclusion is that the V8 with the Whipple provides the greatest horsepower and torque across the entire rpm range. I had originally thought the Ecoboost would win out at lower rpm but that just isn't the case.

If you have data that refutes this analysis, please share. I have no pride of ownership here and am totally open to a different conclusion if supported by good data. Many thanks to everyone who contributed to this thread!

 

[JExpedition07]

Dyno runs vary, so it’s tough to pin down. I think those stock 5.0 plots are more on the lower end. Most stock 5.0 I have seen run on 93 octane put down around 360 horsepower at the rear wheels. Not sure how much the 3.5 EB varies based on octane. The 5.0 will do about 340 HP on 87 and 360 HP on 93. You can bump up torque big time with E-85 (no tune), most show 415 lb ft at the wheel stock on E-85 for the 5.0 (Livernois and Oz). The blue vs purple on 5-star are stock 87/93 baselines.

 

[Samson16]

My conclusion is that the V8 with the Whipple provides the greatest horsepower and torque across the entire rpm range.

Compared to a tune only EB or PB? I would certainly hope so!

 

[HammaMan]

After 1st gear, the truck is never below 4k RPM due to the 10 speed's ratios in accelerating. With a 6500 RPM shift, here's the next RPM (not factoring in slip before TC lockup).

• 1st to 2nd: 4,132 RPM
• 2nd to 3rd: 4,673 RPM
• 3rd to 4th: 5,358 RPM
• 4th to 5th: 5,585 RPM

I can spin all 4 34" tires off the line as it with a completely stock motor with tune and 93 pump gas.

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