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What is up with this company and the HEMI? I mean do they like to stuff that oversized engine into all of their vehicles? Back in the muscle car era, the HEMI was known as the engine of all engines and smoked anything in its path. Now 35 years later, Dodge and Chrysler are offering this engine on nearly every car. I bet 90% of people who have newer vehicles with HEMI's don't know what they were or even stand for:thepan: !

This begs to ask, are they going to start putting the hemispherical engine into their line of minivans? Just think "The 2007 Dodge HEMI Caravan, now you'll be able to stand up to those bully soccer moms driving Hummer's and Suburbans":histeric: !
 

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Probably. The HEMI is a pretty good engine, and its sort of become their trademark. It's a very nice way to advertise a car. "Look, this thing's got a HEMI!" Most people probably don't know exactly what they are, but they do know that they are powerful engines for sure. Just watch the Dodge commercials...:devil:
 

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Honestly...its a good and bad thing. Good: hight power cars with a good o'l V8.... Bad: Hemis everywhere I think they shouldnt have put them in the jeeps, thats a little to far. I'll be happy with my 350hp Hemi Charger though. hehe.
 

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But the Hemi remains an option rather than the main engine in these models. You'll never see a billion SRT-8s running around there. Nonetheless, DCX is probably overjoyed at the success of the engine.

In the old days GM had the Rocket V8 in Oldsmobiles, Caddy had its 500, Buick had the 455 (and Pontiac its SuperDuty version), Chevy had the 454 SS engine, etc. In those days, GM's brands each had a big engine they could advertise, like Chrysler does with the Hemi now. GM needs to capitalize on its history.

They needs engines they can sell like this, and the Northstar while being a great engine, ain't doing it anymore. The LS6 is powerful, but it's not a "genuine" Caddy engine, and its not given a "personality" by GM's ad men.
 

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good point. DCX is doing a great job of putting out hi pro cars that people can afford. And the SRT cars are great. Not all of them use the Hemi either. The SRT-4, Crossfire SRT-6, Ram SRT-10 and viper dont use it. Just the Charger/300/magnum and the Jeep SRT-8. Oh and durango...but theres no SRT Durango...yet...
 

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They needs engines they can sell like this, and the Northstar while being a great engine, ain't doing it anymore. The LS6 is powerful, but it's not a "genuine" Caddy engine, and its not given a "personality" by GM's ad men.
Hmmm. What about that new V8 they use in the Impala? Or that new HO ecotec that they're using in the Solstice/Cobalt SS? Or the 240HP V6 in the Malibu SS/and some other Pontiacs? What about the engine in the Z06???

GM has plenty of engines, they just aren't marketing them...
 

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what hes saying is they really cant market them like the Hemi. When someone says Hey its got a hemi people take notice....when you say ecotec most people go huh? The only real "known" engine is the LS* and the North Star, but even the north star isnt that well known anymore.
 

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ben72227 said:
Hmmm. What about that new V8 they use in the Impala? Or that new HO ecotec that they're using in the Solstice/Cobalt SS? Or the 240HP V6 in the Malibu SS/and some other Pontiacs? What about the engine in the Z06???

GM has plenty of engines, they just aren't marketing them...
It's true that GM has engines, just few that can really grab people's attention. The 303 hp V8 in the Impala just isn't very exciting, and the Ecotec has been around a while, and it's in the Ion for God's sake. It's hard to get all hot and bothered about an engine called "Ecotec". At least VW can sell some noise having a 404 hp W12 and W8. Chevy needs a new Blue Flame Six. Ford needs a new Cobra Jet 428.
 

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428 Cobra Jet is a GREAT idea...I'd think about buying anything with that on it, just for the fender badge!!
 

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It's like the modern day SBC... (well OK the modern day SBC is the 5.3 you can find in damn near any truck and now in FWD form in cars.)
 

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SpeedyArizona said:
What is up with this company and the HEMI? I mean do they like to stuff that oversized engine into all of their vehicles? Back in the muscle car era, the HEMI was known as the engine of all engines and smoked anything in its path. Now 35 years later, Dodge and Chrysler are offering this engine on nearly every car. I bet 90% of people who have newer vehicles with HEMI's don't know what they were or even stand for:thepan: !

This begs to ask, are they going to start putting the hemispherical engine into their line of minivans? Just think "The 2007 Dodge HEMI Caravan, now you'll be able to stand up to those bully soccer moms driving Hummer's and Suburbans":histeric: !
Actually the Caravan and K cars were available with Hemi engines! The 2.6 Mitsu engine was a Hemi and the early K cars that had these engines had little Hemi badges on the fenders, check out the junkyard sometime.:bigroll:
 

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The name may be cool, but the technology is really outdated. Compaired to what's available now, a hemisperical combustion chamber is really inefficient. The average Honda engine flows better than a Hemi does.
 

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I remember having an excellent article in an old MuscleCar mag on hemispherical combustion chambers, but I found this......from HPP no less!

Hemispherical or Pentroof

"A chamber of this design is considered to offer the least amount of compromise for the efficiency gained. The valves are placed at the bore perimeter and, in the instances of the original Chrysler Hemi, at an included angle of 58.5* from the crankshaft centerline. This position also allows for huge airflow gains since it moves the valve away from the wall and unshrouds quickly. This creates a more efficient cross-flow movement of the charge during overlap and limits thermal transfer from the exhaust valve to the fresh charge. As mentioned previously, this design offers the best surface-to-volume ratio and also creates a very short direct exhaust port, essential in limiting heat rejection into the coolant. Having a central spark plug, the Hemi offers excellent octane tolerance. At the perimeter of the bore across from the valves are small squish pads to help move the end gas over to the spark plug and increase burn speeds. With pushrod designs, the valve placement requires dual rocker shafts but lends itself very well to dual OHC configurations. An additional benefit is the distance between the intake and exhaust valves, which further limits heat transfer. The incoming charge also generates a high rate of tumble."

http://www.highperformancepontiac.com/tech/0209hpp_fire/
 

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Heh....compaired to a Wedge type head like those use by Ford and GM in the 60, and 70's...yes. By todays standards.....no. They flow well, but don't make nearly as much power as they could, conisdering their displacement. Back in the day when the Hemi first debuted, it was better than pretty much everything else on the market. Now, you might as well call it oldschool. Combustion chamber design has advanced well beyond what could be developed in the 1960's, which is basically what Daimler Chrysler is marketing. 40+ year old technology.

Pentroof is what Hondas are using to make 240hp from 1.8L engines. It's very similar to the design of the Northstars combustion chamber. The actualy surface area in a pentroof design differes from a hemi in that in most cases, it's two seperate angles instead of a sherical shape. The Pentroof design is more efficient than the Hemi which is why alot of manufactures like Honda are using it in smaller engines to make lots of power.
 

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That's certainly true, engines are a lot more efficient today, and it's amazing the kind of power per litre Honda is getting in some cases, but those have to be reved quite high....

2 valvers make more torque down low, and I'm happy with that for darting across those intersections safely. ;)
 
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