The boy said "Hemi".

TripleTransAm said:
Depends on the Northstar.

The 10.3:1 Northstar of the late 90s required premium fuel. With some combustion chamber rework, a simple drop of .3 in compression ratio allowed it to run regular fuel. That's 10.0:1 on regular fuel thanks to a good combustion chamber design (faster burn).

Our motors have 10.1:1 compression, and can't feed on anything less than 91 octane without inducing heart palpitations. With the same overall displacement. With better low end and midrange efficiency.

Sometimes performance technology isn't about gadgetry... there's a lot to be gained in efficiency through simplicity.
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Good point, the simple solution is often the best one.

I wouldn't give much of the credit to the head design for the 10:1 Northstar engine running regular fuel though, probably had more to do with air/fuel management. The aluminum head is so much better than cast iron in this respect there really is only very small gains to be made on design tweaks like combustion chamber design. I dare say with the right tune program we could run regular.
 
David Morton said:
I dare say with the right tune program we could run regular.
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Possibly. But we would probably kiss our 302 hp goodbye. And what precious little low end torque we get to begin with.
 
TripleTransAm said:
Possibly. But we would probably kiss our 302 hp goodbye. And what precious little low end torque we get to begin with.
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Oh there's no "possibly" to it. I remember guys jetting dual carburetors on tunnel-rams back in the 70s to run pump gas on engines with pop-up pistons, 12.5:1 compression, and cams that wouldn't idle below 1200 rpm. They'd run great on 89 but you could smell 'em a mile away. The exhaust pipes would drip unburned fuel at idle and the fumes would wilt the grass on the side of the highway. We'd talk about gallons per mile, but at 49.9c a gallon who cared?

:lol:

You're right though, we'd lose that 302 hp.
 
:alone: Im just glad that some one is getting a little action with there mm, to many black goverment issue (GI) CV's to get any around TN. But everybody gets out of the way!
 
I always thought than an engines resistance to detonation was primarily due to the heads shape and combustion chambers efficiency/and or quench area. Example; Ford flathead. Run 10-1cr in that and you'd better have 116 octane.

Anyone remember the ZR1 Corvette? 345cid, 32 valve, alloy block and heads. 375-405hp (depending on year). Yet the current Z06 has 405hp with only 16 valves and one cam!

I'd rather do a cam swap in an LT-1 or LS-6 than our DOHC. I love my Marauder, but an AMC 401 under the hood would have been a better choice.

Hp/liter has never won a race.
 
NICE KILL!!! ON THE HEMI! IT IS ABOUT THE DRIVER AND TEACHING HIM A LESSON SAFELY. I SPANKED A HEMI CREW CAB WITH MY 1995 XLT F-350 CREW CAB DIESEL DUALLY POWERSTROKE IT IS ALL BUT STOCK IT HAS THE FULL BANKS INTERCOOLED AND MORE AND WILL FLAT HALL A$$.

THE WIFE AND I WERE HAVING A NICE CRUISE HOME AFTER A MEAL UP IN TOWN AND ROAD GOES TO TWO LANE AND THIS GUY IN A HEMI BLOWS PAST ME AND GIVES THE LOOK "I AT HIS POINT DID NOT GET INTO IT" AND LOW AND BEHOLD 1/4 MILE DOWN THE ROAD THERE HE IS AT A RED LIGHT :coolman: LIGHT TURNS GREEN I HAD TO DO IT HE GETS A FENDER ON ME THEN IT IS ALL OVER AFTER THAT NEXT THING YOU KNOW HE IS AT MY BACK QUARTER AND THEN I PULLED TWO TRUCK LENTH'S AND GAVE HIM A GOOD WIFF OF DIESEL NOW THAT IS A POWER TO WEIGHT RATIO BABY!
 
Wasn't the term hemi derived off "hemispherical cylinder head" with the spark plug in the middle?

Mopar prolly sat on it to wait till sales were in the toilet then said "hey....Hemi...people hear that and wet their pants..."

I fear no Hemi.
 
Nitrous SSC said:
Wasn't the term hemi derived off "hemispherical cylinder head" with the spark plug in the middle?
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You are correct sir. Something now common in some cars from all the Manufacturers, Is now a Selling point to lure people into the Chrysler dealership thinking that they are getting a piece of history from the muscle car era.
Ignorance is bliss for the general public and thats what Chrysler is banking on
 
Blackened300a said:
You are correct sir. Something now common in some cars from all the Manufacturers, Is now a Selling point to lure people into the Chrysler dealership thinking that they are getting a piece of history from the muscle car era.
Ignorance is bliss for the general public and thats what Chrysler is banking on
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UHH WE RESEMBLE THESE REMARKS IE: LIKE THE WHOLE MARKETING SKEEM MERCURY USED ON THE "MARAUDER"
 
Yes but the Marauder is something special. And 99% of the people on this board arnt' stupid enough to buy the car cause its "cute" and "wanted to have a car named marauder" I've had the car just over a week and I've noticed most people can't even read the word "marauder" its damn funny. I bought the thing cause its a mustang with 4 doors.
 
Nitrous SSC said:
Yes but the Marauder is something special. And 99% of the people on this board arnt' stupid enough to buy the car cause its "cute" and "wanted to have a car named marauder" I've had the car just over a week and I've noticed most people can't even read the word "marauder" its damn funny. I bought the thing cause its a mustang with 4 doors.
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I like to call it the family mans cobra :coolman: and yes they are special i believe just about all of the folks here know that that is why we have this board but you have to admit mercury tried to market this car on the heritage of the marauder you may know this if you have followed the from the start as i have. Thus marketing wise same thing chrysler is doing with hemi and now the charger and they have been using the RT on just about everything even the neon :o. And you are correct most people on street have no idea what they are or will do!
 
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Nitrous SSC said:
... I bought the thing cause its a mustang with 4 doors.
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Correction: Mach I Mustang with 4 doors!

I'm watching Todd with his turbo installation. Awesome! This is what we've been needing here, a forced induction system more suited to the engine. I'm planning to do a dual turbo setup next year. Two smaller ones for faster spool-up and better low-end torque.
 
Nitrous SSC said:
Yes but the Marauder is something special. And 99% of the people on this board arnt' stupid enough to buy the car cause its "cute" and "wanted to have a car named marauder" I've had the car just over a week and I've noticed most people can't even read the word "marauder" its damn funny. I bought the thing cause its a mustang with 4 doors.
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I bought mine because it is a 4000lb+ hearse that will do sub-13sec 1/4's right off the showroom floor - not because it has a HEMI logo on the fender. In fact, I have been toying with the idea of debadging. The funny thing about the HEMI monicker is the Chrysler V6's have the same head design as the new V8's, but DC chooses not to market them the same way - for obvious reasons.

I'm kinda surprised you guys don't give more props to your real apples-to-apples competitor: the late-90's Lincoln Mark VIII. My brother has put headers, exhaust, chip, etc, and he can hang with me at highway speeds. That 32v Cobra motor sounds pretty sweet, too!
 
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bmartin9122 said:
I bought mine because it is a 4000lb+ hearse that will do sub-13sec 1/4's right off the showroom floor - not because it has a HEMI logo on the fender. In fact, I have been toying with the idea of debadging. The funny thing about the HEMI monicker is the Chrysler V6's have the same head design as the new V8's, but DC chooses not to market them the same way - for obvious reasons.

I'm kinda surprised you guys don't give more props to your real apples-to-apples competitor: the late-90's Lincoln Mark VIII. My brother has put headers, exhaust, chip, etc, and he can hang with me at highway speeds. That 32v Cobra motor sounds pretty sweet, too!
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Yea but you KNEW what you were buying. You didn't buy it for the name badge. Thats all I'm saying. Most people just point and look at logo's. I'm sure that SRT8 is a blast to drive. :)
 
Nitrous SSC said:
Yea but you KNEW what you were buying. You didn't buy it for the name badge. Thats all I'm saying. Most people just point and look at logo's. I'm sure that SRT8 is a blast to drive. :)
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I bought mine for the bumper cover :dunno:
 
bmartin9122 said:
I'm kinda surprised you guys don't give more props to your real apples-to-apples competitor: the late-90's Lincoln Mark VIII. My brother has put headers, exhaust, chip, etc, and he can hang with me at highway speeds. That 32v Cobra motor sounds pretty sweet, too!
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That's NOT a COBRA Motor either...
It's a Lincoln 32 Valve Modular V8.
Get it right...

The COBRA ENGINE is the SVT Version of the Lincoln engine.

You want proof, talk to BigDogJim.
He knows the entire history of the engine.
 
MENINBLK said:
That's NOT a COBRA Motor either...
It's a Lincoln 32 Valve Modular V8.
Get it right...

The COBRA ENGINE is the SVT Version of the Lincoln engine.

You want proof, talk to BigDogJim.
He knows the entire history of the engine.
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Whoa - easy there big fella. I was only parroting what I had been told. I guess what you are saying is the Marauder has the identical motor as the SVT Cobra, but the Lincoln Mark VIII's is a similar block and that is about it?

Like I said before, I mostly lurk here, since I know very little about Ford's performance stuff. I'm mainly just trying to educate myself here. :beatnik:
 
bmartin9122 said:
Whoa - easy there big fella. I was only parroting what I had been told. I guess what you are saying is the Marauder has the identical motor as the SVT Cobra, but the Lincoln Mark VIII's is a similar block and that is about it?

Like I said before, I mostly lurk here, since I know very little about Ford's performance stuff. I'm mainly just trying to educate myself here. :beatnik:
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No the Marauders have same eng as Mach 1 :cool4: Even though it is the familey mans Cobra :rasta::P
 
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