How Much Power Do Headers Actually Make?!

[@salvatorehayes2753]

I Was About To Skip... Then I was Like Oh Snap That's A Hemi hahaha

[@cjsgarage3789]

For a motor pushing 1200+hp, the restrictive manifold will definitely choke the motor a bit. For a stock application, you’ll maybe see a 5-10hp increase due to not requiring a high flowing exhaust setup. Gain is still a gain nonetheless.

[@alexcockerill]

Agreed. Plus it can change the torque curve and actually make the useable low end torque a little worse while still raising the peak number. But headers sound great!

[@Texas_Road_Warrior]

@@alexcockerillWhat are you smoking? There’s NEVER been a dyno that shows a long tube header making less power down low than a factory manifold or shorty header… the longer runner length promotes low RPM power SAME as longer intake runner lengths

[@stewpittt]

@@Texas_Road_Warrior in newer electric controlled engines who obviously have to add a tune. I put inch and seven eights headers on my 03 Z06. I definitely lost some Lil Wayne torque, I could tell right away. But I had the car tuned, the power came back and then some. I did not run a Dino because I don’t care about horsepower, but the tuner thinks I added approximately 20 hp. Mind you this is muffler delete, with high flow cats. Obviously every situation will be different; this was just my experience, but the point should be clear.

[@jacobwebb8818]

The sound difference of long tubes is worth everything

[@heathcarr1105]

I've never seen torque measured in Lil Wayne's. What's the conversion for those vs nM?

[@oscarwalton1188]

Depends on the tune camshaft and compression to the power increase if any modern manifolds aren't that restricted and you might lose a little tork at low rpm

[@Texas_Road_Warrior]

You’re not losing low end power with a long tube… EVER

[@zidanex9x]

That's 68 at 1267 hp. so gains for my 400 hp motor would be less

[@PHILLY214]

Still about 15-20hp

[@tayloralvidrez4342]

​@@PHILLY214 no because the factory manifolds easily flow the cubic feet of air needed for 400hp. Those thousand dollar headers are definitely under 10hp at @ 400hp

[@pzpinkslip123]

In 345ci hemi the 5.7 they make 30 hp no tune. The 5.7 is 400 hp.

[@christophermix6845]

Still 100% worth it. May not seem like much power but the drivability is unbelievably better.

[@lb9gta307]

Depends on the application. Those Hellcat manifolds are really shorty headers. They're decent for stock units. If your car has some junk log manifolds like mine you can gain 30hp on a 250hp engine. It also matters a little more without a supercharger.

[@peted5217]

Kooks optimizes size and length for specific apps to get best result , mostly above 4,000rpm. Most street stuff rarely used that way and is usually restrictivly muffled .

[@PCMenten]

And that’s exactly how I drive; wide open throttle. Send it!

[@Robert-mn8gc]

It's at 5000 rpm that the Kooks start 2 shine . 68 hp is a terrific gain . 33 ft lbs as well . Xcellent 😅

[@DavidClark-vu3dw]

If the man who first invented the combustion engine could see this he would be amazed.

[@hotrodray6802]

68 yes... But across the curve it was only about 5 until mucho rpm oh.

[@patrickciarcia4100]

Very nice… can you make sure that you have headers to fit a 2019 challenger wide body, when I pick up the engine… I’m trying.. lol.., Pat 😎

[@adamclark2245]

Thats nuts but a percentage probably would be something thats a little more accurate to the everyday car

[@Chris-p7e9m]

Evidently we skipped the tightening of the engine mount to the floor

[@383mazda]

3.5% gain in peak torque

[@laprepper]

The lines seem fairly close until you get up to about redline

[@johnnyb3987]

I had "Krooks" headers on my zl1. They were alright.

[@gunsncars469]

Yeah at 7000 rpm. That's where the 5.7L hemi in my grand cherokee cruises at. Time to spend $2k on a set of headers so I can see a huge difference 😂😂😂

[@toddclark332]

Thats some good

[@justincap6507]

Tuned after the header swap or stock tune just swapped headers?

[@rashewhite]

🔥🔥🔥🔥🔥

[@maddawgnoll]

You have to test shorty, mid and long to really see what's what.

[@ThatGunNut1983]

Headers and a tune and got an extra 68hp, not bad

[@davidguzower2890]

So when I put these long tube headers on my GM 6.0 LQ4 with this 212/218 cam I'm gonna get 50+ horse power?

[@otm646]

Nah. If you're only in 350 hp land factory manifolds won't cost you much. Spend the money elsewhere for now.

[@calebberry8622]

You can tell the difference in sound😊

[@garyroach3479]

Well first of all headers don't have anything with producing power all they do is remove the exhaust from the motor

[@MrMarkpark]

Wow!

[@944LS]

Yea so 5.3% for 1200hp engine. So gains would probably be 2-3%

[@danychris6671]

Naturally aspirated 1267 hp...yes.

[@andyking9673]

68 peak---what is gain at 4000?

[@jonbar140]

Oh yes, when you modify everything else, the headers are now a power sapper

[@jorgeposadas1192]

68hp is not much more for how much money?

[@InsideOfMyOwnMind]

Yeah, let's just throw away all the low end torque for infinitesimal bragging rights.

[@Drake5153]

I mea, thats something, but not as much as i thought lol

[@SoZe120]

That’s most mods tbh, but that’s why they add up one piece at a time

[@EngineLabs]

It was also apples to apples. We stopped the stock-header pull at 6800. If we had spun the engine (or blower) harder, we would have kept making more. There's more left in there, for sure.

[@michaelmayer8618]

I honestly believe you should’ve got a lot more than that out of it. that’s a 1200 hp motor which is far from stock to only of Gained 68 hp. You’re still choking that motor out apparently you need way bigger headers.

[@Mark-vd8oi]

I THINK U NEED A LARGER HEMI

[@metalsurgeon9196]

......for a tweaked and tuned running in a perfect environment...... For your average pavement princess, or mud toy? Two mpg and a lot of useless noise. Chrome and pipes dont make em go.

[@DannyDisharoon]

It blew uo

[@ThmsPtrsn]

So about 6%

[@doorman7316]

Now swap out that lunch box sitting on top 👍