I Was About To Skip... Then I was Like Oh Snap That's A Hemi hahaha
@cjsgarage37895 ай бұрын
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.
@alexcockerill5 ай бұрын
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_Warrior5 ай бұрын
@@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
@stewpittt5 ай бұрын
@@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.
@jacobwebb88184 ай бұрын
The sound difference of long tubes is worth everything
@heathcarr11054 ай бұрын
I've never seen torque measured in Lil Wayne's. What's the conversion for those vs nM?
@zidanex9x5 ай бұрын
That's 68 at 1267 hp. so gains for my 400 hp motor would be less
@PHILLY2145 ай бұрын
Still about 15-20hp
@tayloralvidrez43425 ай бұрын
@@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
@pzpinkslip1235 ай бұрын
In 345ci hemi the 5.7 they make 30 hp no tune. The 5.7 is 400 hp.
@christophermix68455 ай бұрын
Still 100% worth it. May not seem like much power but the drivability is unbelievably better.
@lb9gta3074 ай бұрын
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.
@PCMenten5 ай бұрын
And that’s exactly how I drive; wide open throttle. Send it!
@oscarwalton11885 ай бұрын
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_Warrior5 ай бұрын
You’re not losing low end power with a long tube… EVER
@peted52175 ай бұрын
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 .
@DavidClark-vu3dw4 ай бұрын
If the man who first invented the combustion engine could see this he would be amazed.
@Robert-mn8gc4 ай бұрын
It's at 5000 rpm that the Kooks start 2 shine . 68 hp is a terrific gain . 33 ft lbs as well . Xcellent 😅
@user-dm9gn8xx2p4 ай бұрын
Evidently we skipped the tightening of the engine mount to the floor
@patrickciarcia41005 ай бұрын
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 😎
@hotrodray68025 ай бұрын
68 yes... But across the curve it was only about 5 until mucho rpm oh.
@383mazda5 ай бұрын
3.5% gain in peak torque
@toddclark3325 ай бұрын
Thats some good
@laprepper5 ай бұрын
The lines seem fairly close until you get up to about redline
@adamclark22455 ай бұрын
Thats nuts but a percentage probably would be something thats a little more accurate to the everyday car
@johnnyb39875 ай бұрын
I had "Krooks" headers on my zl1. They were alright.
@gunsncars4695 ай бұрын
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 😂😂😂
@MrMarkpark5 ай бұрын
Wow!
@danychris66714 ай бұрын
Naturally aspirated 1267 hp...yes.
@rashewhite5 ай бұрын
🔥🔥🔥🔥🔥
@justincap65075 ай бұрын
Tuned after the header swap or stock tune just swapped headers?
@ThatGunNut19835 ай бұрын
Headers and a tune and got an extra 68hp, not bad
@maddawgnoll5 ай бұрын
You have to test shorty, mid and long to really see what's what.
@davidguzower28905 ай бұрын
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?
@otm6464 ай бұрын
Nah. If you're only in 350 hp land factory manifolds won't cost you much. Spend the money elsewhere for now.
@calebberry86225 ай бұрын
You can tell the difference in sound😊
@jonbar1405 ай бұрын
Oh yes, when you modify everything else, the headers are now a power sapper
@michaelmayer86185 ай бұрын
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.
@jorgeposadas11925 ай бұрын
68hp is not much more for how much money?
@andyking96735 ай бұрын
68 peak---what is gain at 4000?
@garyroach34794 ай бұрын
Well first of all headers don't have anything with producing power all they do is remove the exhaust from the motor
@944LS5 ай бұрын
Yea so 5.3% for 1200hp engine. So gains would probably be 2-3%
@InsideOfMyOwnMind5 ай бұрын
Yeah, let's just throw away all the low end torque for infinitesimal bragging rights.
@Mark-vd8oi5 ай бұрын
I THINK U NEED A LARGER HEMI
@user-yr2vn4ml9l4 ай бұрын
It blew uo
@Drake51535 ай бұрын
I mea, thats something, but not as much as i thought lol
@SoZe1205 ай бұрын
That’s most mods tbh, but that’s why they add up one piece at a time
@EngineLabs5 ай бұрын
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.
@metalsurgeon91965 ай бұрын
......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.