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Challenger SRT Hellcat
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Discussion Starter · #1 ·
Good afternoon everyone cat’in :). So as the title says. Are our engines really that special and I say that cause I see our engines being put in so many vehicles I think it’s crazy or is it just me? I mean dodge has hellcat engines in everything now. Do we have a sort of masterpiece under our hoods?
 

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Challenger SRT Hellcat Widebody
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As someone with nitrous, supercharged, and turbocharged LS engines? Yes. It is pretty damn special.

However, they will become less special in about 5 years as the swaps become more routine, in the same way the LS has become progressively more and more common and pedestrian over the last 20 years.

I really want to build a turbo 5.7L HEMI.
 

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Charger SRT Hellcat
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276 Posts
I've thrashed three different Hellcat Challengers at Bondurant over the past few years. The cars themselves are remarkable, but the Hellcat engine is amazing. It will properly be remembered in the future as one of the best high performance engines ever built. Tough, reliable, smooth, and actually quite simple, especially compared with the European stuff.
It is and will be a legendary powerplant.
 

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Challenger SRT Hellcat
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249 Posts
Good afternoon everyone cat’in :). So as the title says. Are our engines really that special and I say that cause I see our engines being put in so many vehicles I think it’s crazy or is it just me? I mean dodge has hellcat engines in everything now. Do we have a sort of masterpiece under our hoods?
Not only is dodge putting the engine everything, but the restomods are now starting pop up the super-charged V8.
 

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Considering the power it makes as a mass produced on the line engine, it's special in that regard. However, it's not 'special' in the sense that it's a low-volume hand-built engine like in some other high horsepower super cars.
 

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Challenger SRT Hellcat Widebody
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That has some pretty exotic internals for a regular production vehicle.

The architecture between the LS, the Gen 3+ HEMI, and the new Ford "big block" are all incredibly similar. The thing that sets them apart, in my mind, is the head design in the HEMI - the factory "Hellcat" heads are pretty amazing out of the box.

Each has its strengths and weaknesses.
 

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.2020 HCNBM6. ...2022 RENB...
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Yes, the engines are very special, in pretty much every conceivable way (unless you prefer burning rice). Maybe some of you don’t remember the begning, most people were shocked to hear Dodge offered a 5 year power train warranty on a new (unproven) SC 707hp car! Everyone was shaking their heads thinking that Dodge was going to find a lot of easy loopholes to not honor that warranty. Fast forward… Those same first run cars are running strong and selling for sky high prices!

“Hemi” is short for hemispherical, half a sphere. I have never seen the head of a 426 but from what I understand it was close to or an actual hemisphere. And it had pleanty of room for a second spark plug. Dodge marketing wanted to capatilize on the Hemi legend and came up with the modern “hemi”, which is not a hemisphere. I have not actually seen the head of a 6.2, but it is my understanding it is a partial sphere, I guess close enough for the Dodge Marketing Department, and not a bad marketing idea, unless you are a hard core mechanical guy (like me) in which case it makes me cringe, but not so much not to enjoy it!
 

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Charger SRT Hellcat
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It is not important that the chamber shape be a perfect geometric representation. No wedge chamber is a perfect wedge, no pent-roof chamber is a perfect four sided shape. The modern Dodge Hemi has small ledges on each side of the chamber to promote turbulence, which allows it to achieve the emissions standards required. The overall shape remains hemispherical, and that's the proper term for it. Those who would deny that term would also have to take issue with wedge, pent-roof, and pocket chambers, amongst others.
I have both a 5.7 and a 6.2 Hemi in the driveway - and they both have hemispherical combustion chambers.
 
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