gonna stir the pot...5.4 v 6.2

[pirate air]

What does the "BOSS" designation mean?

As the story goes... Several years ago Ford code named the 6.2 platform "Hurricane" At that time there were rumors of numerous different configurations of the 6.2, amount of valves per cylinder, sohc and dohc, larger/smaller cubic inches etc.. After hurricane Katrina (that's how long the 6.2's been in design), Ford renamed the 6.2 platform "BOSS", since the "Hurricane" things wasn't popular at the time. Once the economy tanked, I believe most of the other variations of the platform was shelved, settling on the current 6.2l. At times even the 6.2 (along with the Raptor) destiny seemed uncertain, changing month to month. For as why BOSS? I dunno, the 6.2 has a lot of similarities to the original sohc BOSS, so maybe that why.

That's a whole lotta stroke on that 5.4L.
No doubt it would pull hard on the low end.

Does anyone know the origin of the 6.2L, i.e., is it based on a block from another Ford motor, or is it a new block altogether?

I haven't even got my Raptor and I'm thinking a 6.2L based stroker.

The 6.2 is a new casting. Its bore spacing and deck height are greater than the pretty much tapped out 5.4 block. I don't think 430+ cubic inches will be tough to achieve. Livernois could probably give a more accurate cubic inch potential, but there's is room to grow for sure in the 6.2.

There's also potential in the heads, one of the porting guru's at samracing school was able to cut and weld intake ports of a 6.2l head to flow over 370cfm. The exhaust was also worked over and did very well. You won't find anymore information about that particular head because the school unknowingly received the 6.2 engine illegally. Ford's "people" rolled up in blacked out suburbans (lol) and confiscated the head (and the rest the engine I guess) shortly after an auto show where the school had the head displayed.
Livernois is also getting awesome numbers from their cnc work.

I think when we look at the 6.2, we're witnessing Ford's last big n/a platform production engine. Once its dead, thats it, bring on coop toyota/ford hybrids and ecoboost half tons. For a gear head like myself, I'm glad to be participating in the last few years.

 

[SPRSNK]

I can't believe this is on page 5.

Bigger is better. At least that is what she said.

 

[pirate air]

Lets not forget that the Raptor 6.2L has a more aggressive cam in it so my guess is that the bottom end took a hit and why its so lively above 3k. This also would be a reason for them to not release torque curves... ESPECIALLY with the table top thrown up by the EBoost...

The cams are more aggressive but I doubt enough to have a large impact on low end torque. Manufacture hands are tied when it comes to cam profile over lap/valve duration's with emissions involved. The SD 6.2 also has the same kick at 3000 rpm, both 6.2's don't mind screaming. I don't think Ford should be scared (if thats the case) to unveil the Raptor 6.2 graph with the ecoboost around. Sure the eco might (and probably does) have a better torque curve than the 6.2, but its the WHOLE power band that's important to me. Gobs of torque at 2200 rpm traded for almost 50 less top end hp does me no good when I'm running through a wash at 3500-4000 rpm needing power during WOT events. The 6.2 has an excellent balance of both bottom and top power, enough to light the tires from a stop, with a mean little kick at 3000 rpm that carries you right up to the rev limiter.

 

[BIRDMAN]

I have a 2010 Expedition Limited with the 5.4, it weighs in around 5,700lbs

I also have a 2010 Raptor with the 6.2, it weighs in around 6,000lbs

There is a BIG difference in power stock for stock so I'm not sure what is wrong with the 6.2's you guys are driving. I'm not knocking the 5.4 at all, I am saying that I can absolutely feel that the truck has 100 more hp.

Also agree that the Ford transmissions suck my ass. My dads silverado HD has a much better shift strategy.

does your Expedition have 4.10 gears?

 

[WarSurfer]

Nope, but it isn't spinning 35's either.

I think it has 3.73:1. It is 4x4 with the towing package, etc...

The difference is not in the gearing. It's also 300lbs lighter and has far better weight distribution.

Like I said, I am in no way bashing the 5.4, nor am I a 6.2 nutswinger, I was merely stating that there is a very apparent difference in that 100hp advantage.

 

[6.2]

Also gotta account for all the different settings an crap the raptor has vs. Other applications. I'm guessing, anyways, that off road mode, etc impacts the performance vs that of other non off road applications


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[BIRDMAN]

Nope, but it isn't spinning 35's either.

I think it has 3.73:1. It is 4x4 with the towing package, etc...

The difference is not in the gearing. It's also 300lbs lighter and has far better weight distribution.

Like I said, I am in no way bashing the 5.4, nor am I a 6.2 nutswinger, I was merely stating that there is a very apparent difference in that 100hp advantage.

Very apparent difference wouldn't be my word choice, but you're right. There definitely is a difference. It's just not a stark, blow your hair back difference like you would expect the way everyone talks about how ****** the 5.4 is.

And don't forget, 411hp(6.2) is on 93 octane, 310hp(5.4) is on regular octane. So you toss some regular gas in a 6.2 and some high test(or E85) in a 5.4 and that 100hp difference becomes more like 80hp. In a sport compact 80hp is a holy shit, tire smoking difference. On a 6000lb truck...not so much.

I knew this thread would spark some interesting conversation, and the bottom line is that yes, the 6.2 is bigger/better/faster/stronger but in the real world putting aside **** swinging competitions and embellishments, the 5.4 is not the boat anchor it's made out to be and I for one was very pleased to discover this.

 

[comagt]

Very apparent difference wouldn't be my word choice, but you're right. There definitely is a difference. It's just not a stark, blow your hair back difference like you would expect the way everyone talks about how ****** the 5.4 is.

And don't forget, 411hp(6.2) is on 93 octane, 310hp(5.4) is on regular octane. So you toss some regular gas in a 6.2 and some high test(or E85) in a 5.4 and that 100hp difference becomes more like 80hp. In a sport compact 80hp is a holy shit, tire smoking difference. On a 6000lb truck...not so much.

I knew this thread would spark some interesting conversation, and the bottom line is that yes, the 6.2 is bigger/better/faster/stronger but in the real world putting aside **** swinging competitions and embellishments, the 5.4 is not the boat anchor it's made out to be and I for one was very pleased to discover this.

I think there is a large natural bias against the motor due to it's prior existence and experiences. I just have a natural hate for owning another 5.4L due to our 2010 FX4. Loved everything about that truck except for the motor. That motor still existing in the Expedition is the only reason why we haven't picked up one yet. Maybe the Expedition will catch up in 2013 or I can convince her to "live" with a Supercrew Raptor


I would like to see a 5.4L Supercab lined up next to a 6.2L Supercab at the strip, both running 87 octane. You know...for science I can donate the 6.2L side.

 

[SOCOMech]

The 04-08 f150s are much slower than the 09+ trucks. The new 6 speed transmission and a slight bump in power made a HUGE difference. I've been in a 2004 f150 a bunch of times and it was so slow I would never buy one.

It only went up 10hp (tq stayed the same) so there isn't that much difference. I've driven many a 5.4 trucks and obviously have logged alot of time in my 6.2, stock and modified, that being said......down low, they're pretty much on par with eachother, but mid/top end, the 6.2 is better. Oh and I have no issues with the way my 6.2 truck shifts. It likes to get in the higher gears a little quick but all of my shifts are silky smooth.

 

[Phyguy]

It only went up 10hp (tq stayed the same) so there isn't that much difference. I've driven many a 5.4 trucks and obviously have logged alot of time in my 6.2, stock and modified, that being said......down low, they're pretty much on par with eachother, but mid/top end, the 6.2 is better. Oh and I have no issues with the way my 6.2 truck shifts. It likes to get in the higher gears a little quick but all of my shifts are silky smooth.

I HATE fourth gear on pavement in my 6.2. The power curve seems to drop out completely in fourth and I have to drop the hammer to keep momentum going.