SRT Hellcat Headers on a 5.7 Hemi
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- เผยแพร่เมื่อ 9 ก.พ. 2025
- In this video i installed some SRT hellcat headers on my 2018 dodge charger that has a 5.7 hemi engine in it.
to say this was easy would be a lie while i would say removal of the factory 5.7 headers was easy. The install of the passenger side SRT header was a pill due to the top middle bolts not having much access to them. I tried to include the key things that made this posable in order to shorten this vide a lot by not showing them being installed as a visual. i hope this video someone can find us full and is a help to them.
Mopar gaskets
highhorseperfo...
Mopar header bolts
highhorseperfo...
In the next video i will be installing a AEM wideband gauge the harness that will include the wires that will be used for the supercharger and as an extra will go over the changes needed after removal of your cats in HP tuners.
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I have that same sweatshirt. Excellent video. I don't have any mopars, but i like when factory performance parts are fitted on stock production engines.
@@302hobronco thank you
Did you reuse your original 02 sensors?
@@JerzeySmallz yes
Thanks, I’m about to install the 6.4 headers and mid pipes with the Flowmaster Outlaws 3 inch catback. I have a 2014 Challenger RT, do you think I’ll pass emissions with that setup?
@JerzeySmallz i would say that considering the 6.4 and 5.7 have identical settings on the cat side of it, it should pass as long as the 6.4 cats are good. With saying that though diffrent states have different criteria for emission passing. I'm in alaska and we don't have emissions laws other than don't stink out the car next to you and don't make it to loud. Some states will fail you just for the aftermarket cat back. The srt manifolds and cats are an oem part so they won't throw a fit about that.
I currently have Flowmaster shorty headers and I can’t pass emission because my catback exhaust is a 3 inch system. I had the same setup on my Charger JBA shorty headers with the high flow cats and the SLP cabtback 2.5 inch. I passed emissions every time, I read on the forums this morning that a 3 Inch exhaust won’t. I have it tuned but when I put it back to stock or even run a canned tune P2096 & P2098 pops up. So I’m just going with the 6.4 headers and mid pipes
@ as long as you have the cats and none of the codes are tuned out in your tune the sniff for C02 and the computer side should pass now for the 3 inch cat back part might be throwing off the exhaust flow portion think of it like holding a piece of pater at the end of your exhaust and with the larger exhaust size creating a greater flow. also a thing to think about is it takes multiple times driving in order to have a all emissions checked side of your ecm. If you clear your codes directly before going into emissions testing you will fail because the systems checks will be incomplete.
I may have missed it, but do you think these will fit a '17 Ram 1500 5.7?
@lemme_phister I'm having a hard time finding definite answers on that. The manifolds should fit without any issues but your mid pipes might have to be custom unless you are getting one from either the srt truck lines such as the trx, hellcat Durango and the track hawk and srt jeep. You will probably also have to change out your cat back with it.
@alaskagarage
Thanks for the response. I want to make simple mods without digging into the block, so these will be a nice addition.
Why didn't you just go with long tube headers?
@rickkillian2378 i got these ones for next to nothing and with it going supercharged anyways the supercharger alone is going to put it at the tranys limits, so I won't need to go all out to hit those numbers.
@rickkillian2378 compared to the factory manifolds these have bean proven to produce gains. All i really needed tho was a port for the wideband but I had these available.
Those are not headers.
They are tubular manifolds.
Yes that is technically correct because they are an oem part they are classified as manifolds despite being a tubular design that would make an aftermarket option a header.
Might as well get headers if all that work is being done just to swap a different exhaust manifold.
I thaught about that the hole time lol
The 6.1 manifolds do just as well as aftermarket shortys I did this in 2016
@PaperRouteFrank6.7 Im sure these are more restrictive than shorty headers. There is no individual tubing for each cylinder, or a decent collector to help with scavenging. More mid range TQ with them.
@PaperRouteFrank6.7 It isn't like I built headers to know what Im talking about.
The SRT factory headers are considered a mid length header. Longer than shorties, shorter than long tubes. Long tubes are expensive, hard to install and are usually not great for street use on these cars, especially if you are lowered at all. The scrape on everything and will require a tune. These SRT headers have been tested and flow better than ANY aftermarket shorties. They are an awesome upgrade to and 5.7. I have them on my Charger tunes with kooks high flow cats and 3in all the way. It made a huge improvement in performance and sound. These are the absolute best bang for buck mod you can do to a 5.7.