Bolt-On Face Off: '21 Challenger 6.4L VS '21 Mustang 5.0L

[@warzon3396]

Comparing auto vs manual with drivetrain loss kinda apples to oranges

[@Texas_Road_Warrior]

Taht big flat spot from 5000-7500rpm on the coyote is why the 10speed is so lethal, it never quits pulling or loses power anywhere in any gear change 🤣

[@BlackRam17]

Not to mention it’s 500 lbs lighter

[@bobbyprd]

Love the shootout! Not only great info but some good knowledge!

[@pitneybowes-wf4yq]

The tech looks like Dirk lol awesome work and video

[@shadowdemon5730]

Excellent video. Any chance of doing a mod comparison with trucks? F150 vs Ram Hemi vs GM 5.3 and 6.2 would be sick.

[@josemanuelruiz2036]

Very cool video! You guys answered a question that I had in the back of my mind for several years: what are the HP and torque gains for a 6.4 with better air intake and headers? This makes me consider even more the Scat Pack. Thanks!

[@NationalSpeedInc]

Glad you enjoyed it, Jose! Thanks for watching.

[@chetmanley610]

The stock headers on the 6.4 flow extremely well.

[@arturomolinapedroza25]

Camero SS with a manual transmission next please vs Lexus RCF

[@NationalSpeedInc]

Oooo, that would be a great one!

[@SirJamesTND]

I want to see the LT1 V8 full na build. Its on the site but no vids

[@raceredbetty4514]

Rcf is too heavy

[@urbexdad3989]

Do a 6 speed manual 5.0 compared to a 6.4 8 speed auto since this is not a good comparison . Or even an auto vs auto

[@rileyneufeld7001]

You can add roughly 5% due to drivetrain loss of the 10r80 compared to a manual. Not a huge difference since the 10r80 is fairly efficient for an automatic. But that would put the 5.0 ahead of the 6.4 in this comparison

[@dedlock658]

Lmao dude it's a 6.4 vs a 5.0 slopar is trash he forgot to mention the biggest part of this whole thing Mustang is WAY LIGHTER so hp to weight ratio is big that's why hellcats can't beat NA GTs with a few bolt ons

[@jimmymccormick142]

Awesome video there's one more step I'd love for you to take is Tim both of them with e85 and see where we would land

[@nooneymotorsports]

On the results from the headers you compare the mustangs results with stock baseline run instead of the intake test. But with the challenger you do compare it’s header test with the intake test so in all actuality it’s not much of a gain as your stating

[@sergebasque8460]

Great gain on both vehicles, on the mustang did you use all factory head stud with those header, are the long tube the stainless power brand.Thanks!

[@danv8717]

Awesome video!

[@NationalSpeedInc]

Thanks for the words, Dan!

[@MasterCarguy44-pk2dq]

3800 lb mustang vs 4460 lb chalky. The average rule is 12 hp per every 100 lbs of weight difference. So to equal the chalky, chally, lol, youd need 430 rwhp, but it now has 460 rwhp. 10 more than crank rating. Mustang is suppised to be dynod in 7th gear with the 10 spd BTW. From the looks of it, you dont start at 1400 rpm. 2500-3000 is where you start.

[@dedlock658]

That's why NA It's are dominant over the hellcats

[@chopdogrulz1337]

Very good video covering exactly the mods I’m planning on doing. Were these tests done on 93 octane?

[@NationalSpeedInc]

Yep! All done on pump 93 octane.

[@2camsam]

If you would have removed the resonator on the mustang it would have picked about 7 more hp

[@downsouthtv4616]

Great content.

[@antz19coyote73]

So you dyno a manual vs. an auto and that’s a fair comparison????????

[@jaythewrapper239]

People forget about weight to power ratio 😂 reason why ten speed 5.0 whoop scats

[@stevenbabinski7635]

I love and adore the challengers but the one thing people never take into consideration is the weight. The mustang will just walk the challenger especially having the 10 speed auto and being lighter. The torque will give the challenger the jump off the line but the mustang will catch up. Having owned both a challenger scat pack and mustang gt with the coyote I would go with the mustang if I wanted to build something for sure. They just take nods so much better

[@10r80vega]

Did you guys re tune the car after installing the headers ?

[@Tanner_Teves]

Although the Stang picked up more power compared to the Scat, there is no denying that torque on the 6.4! That's probably why these things lose traction all the damn time 😂. There's no replacement for displacement!

[@Shiftnlift]

Yes there is its called 4 cams😂😂

[@captainboose8788]

@@Shiftnlift it has 4 cams yet is still down 80ft lbs lmfao

[@Shiftnlift]

@captainboose8788 and still gaps the dodge lol what does that say..

[@captainboose8788]

@@Shiftnlift not on a drag strip where tq matters

[@Shiftnlift]

@captainboose8788 yes it does.. stangs run the strips... u doing all that talkin coyote is the best motor out there. Let's not even throw boost in the equation. That 6.4 goes boom under 7 psi.

[@MasterCarguy44-pk2dq]

Folks, aftermarket CAI's have been mythbusted in 28 countries on 3 continents. After market CAI upgrades miggt, MIGHT add a few hp but otherwise dont do a damn thing. However a dyno graph can be manipulated to show gains. The air comung in the intake is also not COLD its a few degrees cooler, if not a few degrees warmer. Unless theres a snorkle or scoop sticking 8" in front of the bumper, your not getting cooler air or ram effect.

[@rileyneufeld7001]

Close the hoods on both cars and you get a real world comparison. Not sure about the dodge but the mustang intake 18-22 is very good and you're going to see a very slight increase (maybe 5-10hp if you're in cold air) in power. The jlt just doesn't have a great way to block off the warm engine bay air so the increase in airflow gets negated by the air being warmer and less dense compared to a closed air box. PMAS has an in fender design which is much better.

[@MasterCarguy44-pk2dq]

In muscle cars, manuals always make more power so this was a bagged test from the get go. Ans this goon doesnt specify dyno type either. And he needs to be clear drivetrain loss is "estimated", since theres any one of 5oo components that can affect drive train loss and it has never been figured out.

[@alexander_3923]

How can I make my scatpack respond to mods better like the mustang also what other mods can I do

[@NationalSpeedInc]

Every vehicle responds differently to similar modifications, which is why different approaches are necessary. If you're after more from your R/T Scat Pack., we'd recommend having a look at our Stage-3 package.

[@Oliver-ft2fq]

They’re 2 different engines. The mustang’s DOHC is where the advantage is.

[@alexander_3923]

@@Oliver-ft2fq is 3rd gen coyote better than lt engine since lt is also pushrod

[@Shiftnlift]

​@@alexander_39231 mod you'll get better than my coyote is a cam lol it'll be cheaper and justify horsepower per dollar

[@speed23ism]

Challenger pulling timing on stock run starting around 4k? Wonder if the stock dyno would have been higher otherwise?

[@NationalSpeedInc]

Ah, that's where the intake manifold active runners transition from long to short. The dip can be smoothed out via calibration, but all 6.4L Hemis exhibit this dip.

[@Desertjoker]

Should have raced them against each other for the end of the video lol jk 🔥 content.

[@xGR1MxREAPERx]

Most tuners , even the top tuners like lund and PBD and bama say you don’t even need a revision when installing long tube headers and that the car will add fuel based on the sensors of you can get rid of exhaust faster etc.. how did you get 50hp by adding headers.. that’s crazy

[@NationalSpeedInc]

Although you *can* go without a custom tune, there are clear results with a custom calibration when installing upgrades.

[@Texas_Road_Warrior]

Exactly… that’s what I don’t understand… even the flex fuel tunes don’t change the fueling maps… the ECU just adjusts the fuel trims by itself to make up for the ethanol, and then blends the timing maps based off the theoretical E%… That tells me that the long tubes don’t need a tune… unless maybe you’re able to squeeze a degree or 2 of timing because the engine isn’t as choked up… it’s hard to say…

[@walt669]

Mopar baby lets go.

[@sergiobetanzos1514]

weight 😂😂

[@walt669]

@@sergiobetanzos1514 big girls aren’t for everyone takes a real man to throw around some weight! MOPAR or no car

[@DubstepMagiic]

This comparison would be more fair if the challenger was an rt with the 5.7 and not the 6.4

[@Coyote9smilespergallon]

Same years but Camaro SS vs Mustang GT,,, I’d say same results

[@MasterCarguy44-pk2dq]

And the Hellcat is the GT500 competitor. Dont know why this goon said Didge Chalkenger Super Stock.

[@4077661466jp]

Automatic transmission robs more power than manual and the car with less flywheel hp gets Automatic lol of course, also better to do these test with hood closed as its more realistically what to expect as hood open and obtaining all the cold fresh air it wants isn't realistic

[@MasterCarguy44-pk2dq]

And for god sakes Jordan, close the hood of those cars on the dyno.

[@galil12346]

If mustang was manual it would've out dyno'd the challenger

[@MasterCarguy44-pk2dq]

And Jordan when you read numbers keep it numbers man or did you not make it past 5th grade. 409 hp for the mustang stick is not "four oh nine", thats "four hundred nine" hp or four ZERO nine.

[@brianharris1566]

Come on, guys. Don't leave out the Camaro. Are you afraid of the results?

[@timmoyy806]

Gotta realize the mustang is wayy lighter though.

[@Oliver-ft2fq]

The weight didn’t matter in this test. They were dyno testing engines

[@xGR1MxREAPERx]

Video is kinda dumb as your comparing a manual to a auto, manuals lose way less Hp through drivetrain. Also the stock dyno for the hemi was a bad pull.. what was the drop off a ledge on Hp and torque at like 4200ish? All the biggest gains are going to be right after that drop as for whatever reason the car power fell off a cliff? No reason a car should have a dyno looking like that unless it detected knock hard or something.. e85 adds 4-5 Hp on a hemi and adds 20 on a mustang and is the most fun kid hands down. Soo much throttle response

[@bobbylopez9681]

The mustang is also lighter.

[@dbarr8261]

And the Mustang is lighter. Is lighter. Much lighter and nimble.

[@bradysmith3024]

I figured Ford would choke the mustang.

[@krislinder7460]

in the end the mustang wins, the car itself is lighter and the hemi is designed to destroy itself

[@FecalMattur]

only if you don't know what you're doing. The Hemi is very capable of long life if you don't baby it everywhere or idle it for extended amounts of time. I've owned both the 5.7 and now 6.4 both with over 100k on them and have had not one single problem from either. Worked as a tech for an FCA dealer as well. Their engine issues are far less common than you are lead to believe. Doing the recommended maintenance and oil changes every 3k-3.5 (I do with mine anyway) helps 💯👍

[@DemocratsRDemons]

Why are Mustang people such salty cancer about MOPAR? Your car is BORING. No one cares about it except you. It turns no heads. It's like seeing a Honda Accord.... dime a dozen and BORING... It must suck to know the "slower" car is much more exciting and cooler to the general public...

[@MasterCarguy44-pk2dq]

No such thing as a HEMI after tbe 1970's.

[@cuzanater2027]

I'd like to own the Holy trio Stang, Challenger and Camaro, but I can't 😔😔😔. Since I have a Stang I must hate and talk shit to any and all Chevy and Dodge owners🤷🤷🤷 "It is the way!"

[@jasondavidson2411]

Are you kidding? Auto vs manual? Why would you. This is stupid