[Goneracin]

I've tried to search, and there is just no easy way to search for this question. Please keep in mind I am new to Dodge, so bear with me. The 2011 392 were 470 Hp and 470 Tq, then they got a bump to 485 and 475. Do we know what changed? Was it just tuning, or were there actual mechanical changes?

Thanks in advance, I'm sorry if this has been covered before, I'm new to this Dodge thing.

 

[Pauljw]

A pen...

 

[Goneracin]

It cant really be that simple......

 

[Pauljw]

Probably not.(forgot sarcasm tag)

 

[NoCash]

470 - 485 - 550, you'd never be able to tell the difference. Future collectability is what your asking about and it will be based on the buyers perception of the tailights and Headlights. Thats about it.

 

[Goneracin]

Correct, probably could never feel 15 hp on such a heavy car. I just wanted to know what the actual difference was, if any.

 

[Rpmf08]

Wasnt it the hood and front headlight intakes that gave the engine more air and more hp? I dont know...

 

[Goneracin]

Wasnt it the hood and front headlight intakes that gave the engine more air and more hp? I dont know...

If that was the case, then wouldnt a headlight intake just automatically bump up the hp? Or is there tuning required?

 

[Rpmf08]

If that was the case, then wouldnt a headlight intake just automatically bump up the hp? Or is there tuning required?

I have no idea, im taking a wild guess here which probably doesnt help anyone. But it sounds right so i may run with that lollll

 

[fyrdude]

If I was guessing, and I am, I’d say it was a tune upgrade.

 

[Slidd]

A paper change as said I believe, and the switch to electric power steering didn't hurt.

Hellcat is the same, 797hp to 807hp is a paper rating at 100 rpm more. Same tune.

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[Big Swede]

Did the early 392’s have the variable runner length intake? The electric steering steering frees up power as well. I’m not sure what year those two things came about.

 

[OregonScat]

I read a good article about how manufacturers, if they know they will be using an engine package for extended model years, will sometimes under-rate power in the first few years, allowing them to increase the HP numbers at a later date (without actually changing anything) for a perceived “upgrade” at a later time.

I think Ford did this on the Mustang.

 

[John Matthews]

Either a tune or it was always there

 

[Slidd]

Did the early 392’s have the variable runner length intake? The electric steering steering frees up power as well. I’m not sure what year those two things came about.

Yes it did.

I read a good article about how manufacturers, if they know they will be using an engine package for extended model years, will sometimes under-rate power in the first few years, allowing them to increase the HP numbers at a later date (without actually changing anything) for a perceived “upgrade” at a later time.

I think Ford did this on the Mustang.

Agree with this and seems they did the same thing with Hellcat.

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[A Guy]

The factory horsepower and torque ratings on the 2011 to 2014 engines was 470 hp @ 6,000 rpm and 470 lb.-ft. @ 4,200 rpm. In 2015, the 6.4L/392 HEMI engine got a bump in horsepower to 485 hp @ 6,100 rpm, while torque was increased to 475 lb.-ft. @ 4,200 rpm, due to a revised intake manifold and tuning

GEN III HEMI® Engine Quick Reference Guide Part IV

MORE CUBES AND MORE POWER: 2011 – 2021 6.4L/392 HEMI® V8 ENGINE So far in this series, we have covered the beginning of the great HEMI® engin...

www.dodgegarage.com

A Guy

 

[raceheart77]

In 2011 it was said by many that it should be more than 470 from the dyno pulls. There is an article somewhere about that too.

 

[A Guy]

2011 Dodge Challenger SRT8’s 6.4-Liter Hemi Dyno Tested

We've known for months now that Dodge would be dropping a new 6.4-liter (392 cubic-inch) Hemi V-8 into its SRT8 variant of the new 2011 Dodge Challenger, and then in late October we finally saw it. Now we have some insight into the kind of power delivery we can expect from the big cube V-8...

www.motorauthority.com

A Guy

 

[Slidd]

The factory horsepower and torque ratings on the 2011 to 2014 engines was 470 hp @ 6,000 rpm and 470 lb.-ft. @ 4,200 rpm. In 2015, the 6.4L/392 HEMI engine got a bump in horsepower to 485 hp @ 6,100 rpm, while torque was increased to 475 lb.-ft. @ 4,200 rpm, due to a revised intake manifold and tuning

GEN III HEMI® Engine Quick Reference Guide Part IV

MORE CUBES AND MORE POWER: 2011 – 2021 6.4L/392 HEMI® V8 ENGINE So far in this series, we have covered the beginning of the great HEMI® engin...

www.dodgegarage.com

A Guy

Don't know what intake revision happened in 2015 but the active intake started in 2011.

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[A Guy]

Yeah, same part# 2014 and 2015?

A Guy