3.5L EB vs. Supercharged V8 at lower rpm's

[Burns363R]

the blown v8 will out shine the ecoboost pretty much everywhere at any elevation. End of story. I love my ecoboost, but honestly a 5.0 with a whipple is going to outshine even the best eboosts. Just look at Cleetus McFarlands bone stock truck with whipple. Runs in the 10's i think.

the turbos are going to give alot better fuel mileage than a whipple.

 

[freewayman]

Something else note here as well, you don't have 93, you have shitty 91. Unless you are going to run an E-blend your numbers will be far less and the thinner are to boot. I lived in the Springs over half my life and that is one thing I don't miss, crap gas and thin air for performance. I do miss all the back country hiking, fishing, and camping but after a while it all looks the same.

Is 91 gas in mountain states objectively shittier? Or do you mean shitty compared to 93. Also for forced induction engines I'm not sure the thin air due to elevation matters at all. I live near Glacier National Park but thankfully the shell in Pincher Creek Alberta has Shell 93. I try and fill up with that stuff exclusively. One thing I can say however is that I notice 0 performance difference between where I'm at @5000ft vs. sea level.

 

[Calbot]

It sounds like you really want a SC V8

If the stock 3.5 isn’t enough for you then it’s obvious this is an emotional decision rather than logical, in which case get what you really want.

I give you permission.

 

[zx12-iowa]

This thread is kinda old. OP- which did you choose?

For those who don’t watch the 5.0 v ecoboost wars (haha), the facts show that a well tuned/modded 5.0 with supercharger easily smokes a well tuned/modded ecoboost in the 1/4 mile. However, in most cases the supercharged 5.0 is only a couple mph faster in the 1/4 than a well tuned ecoboost. But still faster.

I have a ‘23 and don’t want to replace an ecu to tune. Instead I got a JB4. It gives me around 50-75 more torque and is very noticeable. I picked it up second hand for 40% off new. Installed in 15 minutes and can easily switch between tunes or remove to preserve extended warranty. Something for others to think about with a 23/24 tremor.

 

[Burns363R]

What is the 5.0 vs ecoboost wars? @zx12-iowa

 

[Escape Hatch]

Is 91 gas in mountain states objectively shittier? Or do you mean shitty compared to 93. Also for forced induction engines I'm not sure the thin air due to elevation matters at all. I live near Glacier National Park but thankfully the shell in Pincher Creek Alberta has Shell 93. I try and fill up with that stuff exclusively. One thing I can say however is that I notice 0 performance difference between where I'm at @5000ft vs. sea level.

Thinner air will impact FI but not to the degree of NA motors. When I speak to 91 being shitty I am drawing comparison to 93 here on the east coast. I also find it interesting your butt dyno does not recognize a difference between 5k ft altitude difference, I notice.

Interesting article for you to read from Garrett as it provides data on altitude impacts to a turbocharged motor.

Turbocharging At Elevation

A naturally aspirated combustion engine will lose 3% of its power for every 1,000 ft of elevation gain. Add a Garrett turbocharger to minimize the loss

www.garrettmotion.com

 

[jmelgin83]

This thread is kinda old. OP- which did you choose?

For those who don’t watch the 5.0 v ecoboost wars (haha), the facts show that a well tuned/modded 5.0 with supercharger easily smokes a well tuned/modded ecoboost in the 1/4 mile. However, in most cases the supercharged 5.0 is only a couple mph faster in the 1/4 than a well tuned ecoboost. But still faster.

I have a ‘23 and don’t want to replace an ecu to tune. Instead I got a JB4. It gives me around 50-75 more torque and is very noticeable. I picked it up second hand for 40% off new. Installed in 15 minutes and can easily switch between tunes or remove to preserve extended warranty. Something for others to think about with a 23/24 tremor.


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I eventually chose the 3.5L Ecoboost. This choice was driven by the fact that I live at 8000' elevation and that normally aspirated engines lose significant power at this altitude. At this altitude, it is roughly 30%. I also learned that I could change the pulley size on the supercharger to compensate (which is what many drag racers do at altitude) but then I would lose the ability to safely drive down to lower altitudes to visit my children w/o swapping out the pulley to the original setup.

The turbocharger setup will help keep manifold pressure up better in my situation, so the performance hit isn't as severe. I've also been impressed with the tunes for the 3.5L as well. Unfortunately, no tunes yet available for the '23/'24 models since the ecu is encrypted.

If I were at lower altitude, I would have definitely gone for the 5.0L w/ the supercharger.

 

[zx12-iowa]

I eventually chose the 3.5L Ecoboost. This choice was driven by the fact that I live at 8000' elevation and that normally aspirated engines lose significant power at this altitude. At this altitude, it is roughly 30%. I also learned that I could change the pulley size on the supercharger to compensate (which is what many drag racers do at altitude) but then I would lose the ability to safely drive down to lower altitudes to visit my children w/o swapping out the pulley to the original setup.

The turbocharger setup will help keep manifold pressure up better in my situation, so the performance hit isn't as severe. I've also been impressed with the tunes for the 3.5L as well. Unfortunately, no tunes yet available for the '23/'24 models since the ecu is encrypted.

If I were at lower altitude, I would have definitely gone for the 5.0L w/ the supercharger.

I’m sure you’ll love the truck. You can try the JB4. Supposedly untraceable.