ducgsxr

I've been told by multiple Ford employees that the 3.5 Eco power rating was on Premium. So maybe, maybe not. Your statement of variable valve timing on a production NA engine benefiting from using a higher octane than what is specified for its compression ratio by the manufacturer doesn't hold any water. It's simply not true.

LSchicago

A lot of the F150's on the ground & dealer ordered are 5.0's, even though Ford marketing is ignoring them. It's good to know the dealers are not! I will buy another 5.0.

packplantpath

I read the manual. It says on 87 octane. No maybe about it.

Feel free to believe what you like regarding higher octane. Variable valve timing is effectively variable compression ratio. It can take advantage of it in the same way it can e85. It isn't as dramatic as on a boosted engine, but it is real. The mustang 5.0, is rated on 93 but will run on 87 all day long with less power. The truck version is rated on 87 but gains power on 93. Ford doesn't publish them likely because it would make the Eco look worse. This is all marketing.

This isn't new, the 6.2 super duty was the same way. More power on premium.

Has anybody seen a dyno for the 15 5.0. I want to see where the power really is instead of speculation.

msgford

Huh? The ones I've seen at the dealers are all EB's. My statement is as factual as yours!

msgford

Analysis of the VIN tracking worksheet yields the following:


Of 85 Total Trucks listed:


54 (63.5%) are 3.5 EB's
22 (25.8%) are 5.0 V-8
9 (10.6%) are 2.7 EB's


https://docs.google.com/spreadsheets...mFc/edit#gid=0

Feathermerchant

3. The 5.0 is designed to run so efficiently, it is not saddled like most other engines, with an added on EGR (exhaust gas recirculation) system. Another benefit of simplicity in design.

Really? It uses the variable cam timing to achieve EGR with valve overlap.
So it has EGR. Just not in the conventional way.

Yes I like my 5.0

kbass24emtp

It has been documented on a dyno that the 5.0 gains about 9 hp on premium gas. The dyno graph in on this site if you want to search for it.

ducgsxr

9 HP for a huge increase in fuel costs? Is that a joke? in a 5,000 lb truck? People don't actually think that is even remotely worth it, do they?

kbass24emtp

No, you stated that there was no increase in using premium fuel and I was just pointing out that it was documented that it does. Sorry you were proven wrong internet tough guy.

SS1

You are correct. But the 5.0 does not have an "added on" EGR system with ugly valves and pipes that are in the way and get plugged up. The engineering on the 5.0 deals with the EGR requirement in an elegant and simple fashion. And it doesn't require premium, as was noted. That saved my bacon on a recent family trip to the southwest, and Mexico where all we could find in out of the way locales was 87 grade!

I have been looking, and I can 't find a single published road test on the 2015 5.0 except the Pickups.com one! All the published performance data shows the lower hp e-boost motors being faster than the 5.0. Something is up. We need some honest information here!