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Inside the Ford Shelby GT350's screaming V8

Scorpio

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#1
Inside the Ford Shelby GT350's screaming V8


Autoblog

Gary Witzenburg 2 hrs ago




© Provided by AOL Inc.An in-depth look at Ford's most powerful and power-dense naturally-aspirated engine ever.


For years the flat-plane-crankshaft V8 has been found in Ferraris and other Euro-exotics, primarily because of their powerfully sonic, high-revving, highly extroverted character. Now Ford offers one in a higher volume and more affordable iconic American sports coupe, the $56,495 2016 Ford Shelby Mustang GT350 and track-focused $63,995 GT350R.

Essentially all new, the 5.2-liter in the Shelby is not a derivation of the 5.0L V-8 available in other Mustang models. "Only the valve keepers and keys, a rear seal retainer and some fasteners are shared with any other Ford V-8," says Eric Ladner, its chief engineer. "Different bores, water jackets and head bolts drove us to a new block, and the crankshaft, rods, bearings, cylinder heads, intake and exhaust valves, oil pan, pick-up tube, gaskets and rear crank seal are unique."

Though larger in displacement than the 5.0L and 20 percent more powerful, the new engine is a significant 13 pounds lighter. It also has higher compression (12.0:1 vs 11.0:1), 10 percent higher volumetric efficiency, lower friction, and an amazing 8,250-rpm redline. The maximum revs and the high levels of airflow the engine requires are the major reasons for its unique (for a non-exotic) flat-plane crank.




© Ford Motor Company In the all-new Ford 5.2-liter V8, the connecting rods attach to the flat-plane crankshaft at aligned 180-degree intervals – creating what looks like a flat line of counterweights when… The 5.2L V-8 team's targets began with those of the car for which it was designed, "a serious track car that is street capable as well," Ladner relates. "Discussions were around light weight and high performance, not just power but the broadness of the torque curve and power band, especially in the range where it will be used on the track."

The initial targets were 500 hp at a 7,500-rpm power peak and 410 ft.-lb. of torque at 4,750 rpm. "Then, pushing and stretching ourselves, we looked at 100 hp per liter and revised the target to that. Then we overachieved and delivered 526 hp at 7,500 rpm and 429 ft.-lb. (582 Nm) at 4,750. Our original target for engine speed was 8,000 RPM, then once we built hardware and tested and developed it, we verified that we could take that further out to the 8,250-rpm redline. And the power is pretty flat. It peaks at 7,500, then drops off very slowly."

During a track test of a GT350R at Michigan's Grattan Raceway, we were blown away by the flat-plane V-8's earthy animal yowl and its willingness to rev like a racing engine, which it essentially is. Even without the increasingly common technologies of direct fuel injection and turbo- or supercharging, it is easily Ford's most powerful and (at 102 ponies per liter) most power-dense naturally aspirated road-going engine ever. And it also blew away the editors of online industry magazine WardAuto World, which named it one of their 2016 10-Best Engines.

The old power-enhancing techniques of a high-flow intake manifold and long-tube exhaust headers can maximize flow, but long headers move the catalytic converters too far away for emissions-compliant light-off. The flat-plane crankshaft - which positions half of its eight pistons 180 degrees opposite the other half instead of 2 pistons every 90 degrees - effectively makes the engine's short-tube headers perform like long ones. And with big high-lift valves and a large 87-mm throttle body, Ladner says the 5.2L's intake and exhaust ports flow better than those of the Ferrari 458 flat-plane-crank V-8 it was benchmarked against.

One downside of a flat-plane crank, however, is significant vibration. "Lateral shaking forces are higher than we generally deal with," Ladner says. "We took into account the higher vibration levels as inputs to our CAE (computer-aided engineering) tools and testing, and our design verification plans also involved a number of hours of shaker-rig testing. We just went through the design process as we normally would for any engine, but at higher-level inputs."

© Ford Motor Company The all-new Ford 5.2-liter flat-plane crankshaft V8 found in the Shelby GT350 and GT350R Mustang will produce 526 horsepower and 429 lb.-ft. of torque. At 102 horsepower per liter…
While the engine team benchmarked the Ferrari 458's flat-plane-crank V-8 for performance, the vehicle team analyzed a front-engine Ferrari California with the same engine for NVH (noise, vibration, and harshness). "We took measurements and looked at the parts and how they implemented some things," Ladner says. "I think we beat it." Yet there is still a need for some bracing on the car's underbody to minimize engine-driven shake.

The engine is assembled by two skilled builders who follow it along a low-volume "niche" line in a separate building behind Ford's Romeo engine plant, then sign it when they're done. Ford built just 100 GT350 and 37 GT350Rs for 2015, the 50th anniversary of the original Shelby Mustang GT350, because that original 1965 run was 37. But for 2016, they are regular production models expected to total 3,000-5,000 a year.

http://www.msn.com/en-us/autos/news/inside-the-ford-shelby-gt350s-screaming-v8/ar-BBuXh78
 

nickndfl

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#2
I drove a 1966 Mustang in college. It was okay, but my Chevelle was better and Plymouth smoother.

102 hp per liter is nothing in the motorcycle world. My Yamaha does about 140 hp per liter and it's only a street bike. The R1 and the BMW supersports have almost 200 hp per liter. Of course the power curve is different with more coming after mid-range and to the top of the rev limit whereas the Ford will have lots more torque down low.
 

mayhem

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#3
That crank layout has/is being used in AA/F Funny Cars and AA/F dragsters. John Force's daughter used a Hemi design 600 ci with a flat crank when setting the Top Fuel speed record here at Palm Beach Raceway a year ago at 333 mph. But they are still working out the shakes. Those motors in those cars are solid mounted to the frame, and you feel everything. Vision is gone at 150 mph, so you pretty much just hang on.

I used to have a AA/Fuel license back in the 70's. Didn't make to the big time though, but it was fun.
 

Scorpio

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#4
I too had a '66 mustang, and was less than impressed for sure,

blew a front tire racing a trans am on a back country road and that was the end of that car.

thing was cold blooded as heck in the winter, and the trannies were weak
 

REO 54

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#5
Wish they had a sound sample of the engine with the op.

I have a habit of lingering in a parking garage just listening to my KZ 1000 4 into 1 pipes.

Cheap entertainment !
 

searcher

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#6
Wish they had a sound sample of the engine with the op.

I have a habit of lingering in a parking garage just listening to my KZ 1000 4 into 1 pipes.

Cheap entertainment !
Enjoy..................





 

searcher

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#7
Ford Shelby GT350 Base - One Take
TheSmokingTire


Published on Jun 6, 2016
We've now tested the Shlby GT350R extensively, and suffice to say, we're in love with it. But considering the dealer markups and a few inconveniences with driving a track-focused car on the road every day, some viewers have suggested maybe the regular GT350 is the way to go? This is a base model version, and as a road car, it's simply fantastic.
 

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#8
2016 Ford Mustang Shelby GT350: An 8200-rpm Muscle Car to Shame Sports Cars - Ignition Ep. 142
Motor Trend Channel


Published on Nov 2, 2015
The GT350 is a new kind of Mustang. Track-ready from the factory, its V-8 makes 526 hp and some of the best 8200-rpm noises you’ll ever hear. On this episode of Ignition presented by Tire Rack, Jason Cammisa explains what makes this flat-plane-crankshaft different from a regular V-8 using a set of drums. Then, measures the engine’s output on a DynoJet dynamometer. Even if you don’t know what a dyno is, you’ll love the sounds this engine makes – and the shots of race-car driver Randy Pobst hammering this special car around Chuckwalla Valley Raceway. Could it be that this American muscle car is actually a better driver’s car than most sports cars? We think so – find out why.
 

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#9
Mustang GT with Borla Exhaust
DanielJaegerFilms


Published on Aug 25, 2016
2016 Mustang GT with cat-back Borla exhaust.
 

gringott

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#10


Versus



So the base Corvette Stingray is basically the same price as the Mustang Shelby 350GT. The "racing" ones a bit different, the Corvette GS is about 4K higher.
Which would you rather have?

Me, I'm holding out for the Lotus Evora 400 Hethel Edition @
Prices from $91,900 +Taxes

The Lotus Evora 400 flagship supercar delivers a pure and focused experience from Lotus, combining high performance with legendary Lotus benchmark handling.

 

searcher

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#11
2016 Ford Mustang Shelby GT350R Hot Lap! - 2016 Best Driver's Car Contender
Motor Trend Channel


ished on Sep 19, 2016


Pro driver Randy Pobst hot laps the 2016 Ford Mustang Shelby GT350R around Mazda Raceway Laguna Seca for Motor Trend's 2016 Best Driver's Car Powered by Mothers.

The Ford Mustang Shelby GT350R is one of 12 contenders competing for the title of 2016 Best Driver's Car. The winner will be announced on Thursday, September 22nd on the Motor Trend Channel - http://youtube.com/motortrend and http://www.motortrend.com
 

Argent Dragon

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#12
Nice advancement for a FORD, but I'll stick to my 6.4L Hemi...............*hemi's still rule the muscle car scene (IMO).

*Take the Hellcat for instance which is 114hp per litre with a 6.2L pumping out 707hp.
Of course, mine's no hellcat but a supercharger install would get me there and costs less than either a Hellcat or a GT350........just another way to get there fast.
 
Last edited:

<SLV>

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#13
Don't like the sound. To raspy when it is opened up. It sounded nice at idle, though.
 

Argent Dragon

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Don't like the sound. To raspy when it is opened up. It sounded nice at idle, though.
Yep, when it comes to great sound, nothing beats a naturally aspirated V8 with a cam & headers..............my '67 Camaro sings music if you're into historic muscle.
 

searcher

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#15
Quick Drive: 2016 Ford Mustang Shelby GT350R (w/ Randy Pobst) – Daily Fix Free Episode!
Motor Trend Channel


Published on Oct 30, 2016
What happens when you let a pro race driver loose in a fast car? In this case, the car is a 2016 Ford Mustang Shelby GT350R, the racing driver is Randy Pobst, and the unwitting passenger is Carlos Lago. On this free episode of Daily Fix, which was filmed during Motor Trend’s 2016 Best Driver’s Car competition, Randy and Carlos explore the GT350R’s raucous engine and engaging handling.
 

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#16
Hard to admit, but one thing is sure.........

Today's muscle has surpassed the original 1960's muscle in the performance category..............(but not in styling).
 

Ensoniq

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#17
Impressive engine

Can't swing 150k for the GT 350R
 

<===Foolsgold

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#18
I shoulda had a V8.
 

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#19
I LOVE THE SHELBY GT350 MONSTER!!
Supercars of London


Published on Nov 6, 2016
I always loved the Shelby GT350...even without driving it. But now, I really think it's an awesome car that I would love to one day own!!

Exotic Driving Experiences: http://exoticdrivingexperiences.com/
 

Howdy

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#20
"Though larger in displacement than the 5.0L and 20 percent more powerful, the new engine is a significant 13 pounds lighter. It also has higher compression (12.0:1 vs 11.0:1), 10 percent higher volumetric efficiency, lower friction, and an amazing 8,250-rpm redline."

I'm not too impressed with these numbers. 13 pounds lighter with all that aluminum, big deal. Then having to rev the hell out of a 12 to one compression engine to get that extra 20%...... To me it all spells short engine life and high maintenance costs.
 

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#21
Shelby Mustang GT350R is an ANGRY BRUTE!
Shmee150


Published on Dec 9, 2016
The exhaust sound of the Shelby Mustang GT350R is sheer anger, it's an aggressive brute! With thanks to @masaoodr, I take out the GT350R for a little drive to see what it's made of.

Kicking off with a look around at how it differs from a 'regular' V8 Mustang, then it's time to go for a drive. The car itself is imported to the UAE as it's not available there, just as it isn't in the UK. For me that actually makes this a pretty rare car to be able to drive, having not seen one other than at the launch event in Detroit, in January 2015.

Thanks goes to the owner for the opportunity to drive the car: http://instagram.com/masaoodr

Thanks for watching, Tim

 

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Ensoniq

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#23
I'd absolutely get the mustang over a 335i

Way faster, better sound, better look. Slightly lesser interior but that's personal preference