That V-10 prototype was running out at Milan Dragway in 04 and was running as fast as the Ford GT. The engineers told us it would never see production.

These V10 Mustangs were built in the garage attached to the Dearborn Proving Grounds. I was there doing material testing for Ford. There were 3 V10's just coming apart. 1 Red and 2 silver. The drive-trans were put in 3 Crown Vics. I spoke to one of the test drivers and he said it was such an animal they could never release it, but with the added weight of the Panther it might make a great pursuit vehicle, which it did but Michigan cops said no to the gas mileage. Just before there was the SHOStar, the SHO powered Windstar (2 were made and drove from Detroit to the Oakville assembly Plant in Ontario for feedback) that almost came out as a FreeStar. But again they could not justify the cost.

I remember reading an article about this when this was built back then. It ate transmissions and clutches on the regular.

That V10 sounded so damn good too. If only

I watch this whole video and I don't even get to hear the v10😢

@biy_buildityourself is putting a DOHC V10 in a 2017 Continental. They built the 40 valve heads,it’s a manual and RWD.

Been a Mustang guy since 1987 when I purchased a new GT. Had some 2000 year stangs but never heard of this v10. Currently have a 17 GT and love it. Thank You

From my copy of the febuary 2004 issue of muscle mustangs and fast fords: "the V-10 was fitted w/ a billet 4130 common pin crankshaft (5 journals, 2 rods per journal) rather than the 1 rod per journal found in the truck production V-10. this prototype V-10 Fires at 90 and 54 degrees. The connecting rods are out if a '03 cobra. The pistons are from a 2000 cobra R ford parts bin. Redline is 6,900rpm. The fat part of the power band was from 3,000rpm to 6,900. The intake was fabricated from two 2000 cobra R Units. Two 70mm throttle bodys and two 80mm Mass air meters. It has 30 pound fuel injectors. The transmission was a 2000 cobra R six speed stick shift. the shifter is a aftermarket pro 5.0 The rear axle is a 9 inch the article wrongly states it has 3.73 gear. Ford never made a ratio in that size for the 9 inch. That's a 8.8/7.5 rear axle size.They made a 3.89 for the street and for racing made 3.75/3.80/3.89 ratios. So its probably a 3.89. The suspention was coil over front struts maximum motorsports lower control arms and a tubular K Member.with stock type shocks and griggs racing caster camber plates. As some other commenter said MM&FF Magazine this test mule was driven to and tested at milan Dragway. The best 1/4 mile time on BFG G-Force street tires was 12.83 at 116.25. Then they went crazy and Dumped the clutch at 7,000rpm with mickey Thomson drag slicks And got a 11.51 at 118.19mph! You can like some others have (theres you tube videos of it) and build your own V-10 mustang....if you can get one of the truck engines out if the junkyard, rebuild it and the 4.6 stickshift transmission bolts up to It....if you have the money and time.

The best part about this story is that the prototype still exists and was not sent to the crusher. Bonus: a 427ci v10 (based off this engine) is what powered the Shelby Cobra concept (project Daisy)

I love it Ford needs to revisit that concept

Holy shit a V10 mustang I'm in

"Built it yourself" channel is building a Triton 4v DOHC . Is a travesty how small they still are, amazing build

Not only would I buy one but now I want to build one

the DOHC 4.6 also went in the Lincoln MK VIII LSC

I love it too much power is always just enough

Knew a guy who put a v10 in a 97 mustang GT back in 99 up in yellowknife. That dude was a mustang genius

I haven't heard of this particular Mustang that you are talking about in this story, but I do know in this same time period Ford had a concept Cobra that they were taking to shows which had a DOHC 6.4 liter V-10 that they had a Mustang running around with the test mule motor for that particular concept car. The car had a huge buzz and even appeared in a movie, but Ford chose not to bring it to production. Instead they shocked everyone a came out with the Ford GT instead. No one new that was coming. Possible the concept Cobra was a decoy.

"Mustang V10, now able to take out 25% bigger crowds."

What a blast from the past remember reading about it in one of the major auto mags from the day. If Ford dusted of the Triton V10 castings, updated the heads, cams, and ECU programming and revisited that two seater Shelby GR concept as a reborn Thunderbird, I'd be all in!

This channel has been making some awesome videos lately!

Great video, but one small clarification. The 2002-04 Corvette Z06s had 405HP/400TQ and would have been a better comparison for when this Boss 351 would have been on the market. I've owned three Mustang GTs, but GM really got the LS engines right. Keep up the great videos!

I was part of the retro-stang design works in a peripheral sense. I was an independant designer. The V10 was supposed to be a variable-supercharged 427 with all the modern goodies. Old hat now. I guess Colletti had to find out if i was right, eh?

The 4 valve 4.6 is an amazing sounding engine. The extra exhaust valve makes that motor sound so nice!!

I remember a magazine article covering the build. The cover caught my eye cause it said “Boss 351” and initially figured they were going to pass a 351W as a new Boss. That Ford would have offered a retooled and updated 351C was too much to ask though it might have been easier to fit between the Fox strut towers(?). My last toy was a 5.0 HO and though I’ve owned a couple of vehicles since then with the 4.6 and 5.4 Mod, tech has passed me by and my mediocre mechanical skills that were sufficient enough for a 13 second Fox body Stang were completely kicked to the side of the road thanks to computers and coil packs and metric measurements. But it’s good to remind some of us and educate a new generation or two that the folks at SVO were not necessarily sitting around idle.

good job on your video. Well presented. Thank you

I’m thinking fuel economy and emissions were the deciding factors ultimately

Had a crazt thought about doing this some years back in a 1965. Lots of work and money.

I would absolutely love to own one.

This was a wicked machine, the BIY guys are building their own

I read about this car back in the day and was absolutely amazed. Is the 5.8L V10 the same one they used in the Shelby Cobra and GR1 concepts ? Great video, thanks for sharing the knowledge, and cheers !

I bought one of the Mystichrome Cobra convertibles in 2004. Loved that car. The only mods I did was a smaller pulley on the supercharger and a K&N air intake. Ended up trading it in on a 2006 GTO when they came out… the GTO was fun to drive but not much to look at tho

I got to see one of these on display at Mustang Alley a few years ago at the Woodward Dream Cruise in Detroit, MI. Ford had a little plaque set up talking about it, but this shed some more light on the build. It was silver just like the one on the video. It may have been the same one, idk how many were built. Good video!

Give the NEW GTD THE V10 2024

Thanks for the video

Never heard of this. Thank you

I've been in many arguments about this car. No one believed me it was a 351 v10 "because Fords v10 was a 6.8". Finally, a video about it! It was in motortrend September 03 issue. I thought there was only 1 made as a test mule for the engine. Not much of a Ford fan but I wish they made that motor in production.

Great show and very interesting 😮thank you very much from Sydney Australia 😊

I loved this car when I saw videos of it in the early 2000s. Such a cool and unique car.

I remember seeing this Mustang in old tv car shows. It was not a prototype for a new performance mustang. It was a test mule for the Shelby GR1 that unfortunately never happened. That has got to be the meanest sounding V10 ever!

I was parked next to this car at motorcity foxfest meet and greet last year and had no clue about it until he popped the hood. Cool getting to hear the history of it.

Around 2004 - 2006 I saw a V 10 Mustang in Vegas driving on the street . It was a dark red color with a V 10 emblem on the rear deck by the right rear taillight. It was definitely a V 10 by the exhaust sound !……

I never heard nobody call S.O.H.C sock.🤣

bro why did the title of the video make me laugh so hard its just so outrageous lmao 😂😂😂

I just saw a video on KZfaq where three blokes did this in their garage! Sounds epic

I got to work on some of the cylinder head tooling for the stretched V10 versions around this time. Great experience just after graduating HS.

Good old project Petunia

Saw it in person at the Mustang birthday event in Nashville 2004.

the V-10 ended up in the new Shelby Cobra concept.

Here's a little info from Wikipedia on the 2004 Shelby Cobra Concept. The Shelby Cobra concept features an all-aluminum, V10 engine, displacing 6.4 L (390 cu in) that produces 645 hp (481 kW) at 6,750 rpm and 501 ft⋅lbf (679 N⋅m) of torque at 5,500 rpm. The engine redlines at 6,800 rpm, and Ford claims it is capable of reaching 207 mph (333 km/h), though the car is reportedly electronically limited to only 100 mph (161 km/h).

Atleast Ford engineers are able to have fun building things, we probably wouldn't have the newer Ford GT's without that. They already had the V10 from the Excursion/F250 so lets have some fun!! Its what hot rodders do, it actually fits really well in that Mustang 🐎

Great vid. BIY has a channel where they are building their own Modular V10 in the same manner. Head over there to hear it.

I am sure the sound is out the. I remember this car. The sound of the v-10 is very cool.

I remember reading about these back in the day

I love that you showed footage of ItsNotan8's Mustang doing donuts. I'm slowly restoring an 02 V6 5 spd and want to get mine like his. It only takes a little love to get the V6 and New Edge to super fun levels, while still being THE Mustang (the V8 is the Mustang GT).

I remember when this was supposed to come out.

First view and comment. Awesome. Thanks for the great video. Always like to learn about obscure cars

Right in my back yard, worked at r+l right next to the dragstip there for a bit over a year, the cars would rattpe the building, youd feel it in your chest even from across the street.

The V10 Boss was supposed to hit the crusher too but luckily escaped I think MotorTrend did 2 articles about the car. And videos. That Boss 351 V10 sounds so good

I'd go for it in a blink!

5:55 "since it already used a variety of Cobra parts already" Couldn't have said it better myself

It's amazing what they've done with the mustang since then

I remember reading about that car and thinking “2 computers, how is that going to work?” Anyway, does this mean we’re getting a video on the V10 Challenger? It’s only fair😉.

I got to ride in this exact car as a teen, I have a couple of pics of the outside & I’ve seen the engine, I was NOT allowed to take pics of the engine. It laid rubber for an entire block, it was INSANE!!!

LOL!!! That was the best red neck engine install ever!

This is cool

Damn they should have did this. It would have crushed the Vipers times big. I will say the Gt500 does beat the Vipers times but came way way later. Yes I would want a V10 Mustang. I would even take a V12 Mustang.

Im a Ford guy, WTH were they thinking not making it available.... if the price was fair it would have sold like hotcakes. Damn thing would have been a BEAST. I wana hear this thing!

Do a video on the V-12 LS Corvette next!

We need to hear it!!

There's a car craft mag I remember on it

I would buy that in a heartbeat!❤❤

The moment I heard the sound of this particular V10 is the moment I would say yes I want 2 extra cylinders. The Viper never did it for me.

Always wondered what you drove

My favorite modern mustang body style.

Anyone remember the '94 Mustang Boss 10L concept as well? As a Ford enthusiast the what could have been concept cars Ford teased would make you drool and cry at the same time. Also as someone who owned several Thunderbird SC back in the the day, the rumor of a 4.6 DOHC SVT Tbird in the late '90's was music to my ears and I had my checkbook ready but alas we know how that story ended.

Must've been where @BIY got the idea of a DOHC Ford V10

Imagine that now with twin turbo or a super charger.

Super!

Boss 351 V10? Sure! 6 speed manual .383 rear and pozi. Bullitt green

Great

6:25 the term “positraction”is exclusive to GM’s and Mopar called it “sure grip”and Ford and mercury called it “traction loc”

I'm actually debating slimming down a v10 to bare necessities, beefing up the suspension on my '05 GT and throwing the v10 in to see what monster comes out the other side

A Taurus with that V10 could have been America's answer to the Brabus E Class !!

I fucking loved my 6.8 f350. Sideways thru 3 gears in a 6x6

Recon the terminator was less costly to introduce, they really should have kept it around for a Shelby option or a interesting use case in the 05 gt it's probably the 6.8 reputation as a uhaul motor that scared them away from v10s because only another gearhead would understand the difference in engine origin so the average person who rented a uhaul would assume its like that trash

It was a dream of mine to do this to my mustang back when I was a kid

I would love to have one of these

That’s why they used the style of the coolant crossover like in the 1996 through 1998 cobra

I have a coyote ford falcon and a ford focus i want one of those things too 😂

“Team of small engineers” that’s funny to think about. “Small engineers making big power”

Wasn’t the dual overhead cam mod v8 also in the marauder?

I’ll take that V10 any day!!!

A v10 would be epic

A guy in my neighborhood put a V10 badge on his 2000 V6 like he's fooling anyone...😂

Ford Australia put Double Over Head Cams on the 5.4 and a T56 six speed manual in our Ford Falcons from 2000 untill they changed to the Supercharged 5.0 Coyote in 2015 , the 5.4 four valve engine was called a Boss 260 or 302 or 317 or 325 depending on KW power , IE a Boss 345 had 345 kw of power !

Ive been building open source ECU's since around 2008 when i first got my hands on an arduino. With 1999-04 V6 mustangs available on the cheap i figured out it was pretty easy to yank the 3.8 in favor of V8 goodness. Not the 4.6 though that refit requires a stupid amount of work, no no the venerable windsor 302 5.0 was our weapon of choice. And yeah living in NE Pennsylvania where we dont have emissions testing (Schuylkill co. For the win) helps with this but as these cars age maintaining a passing grade via the sniffer isnt hard either especially with the electronics available today. Initially i had the car setup with the ecu controlling only fuel with an alpha n strategy. think holley projection 2d, uses a fuel map, engine speed, tps, and coolant temp as its inputs and a narrow band o2 sensor for closed loop running on the highway. I wired the car through relay banks so the windows, radio and other accessories still worked, then as CAN sniffer modules became available they cluld be integrated to talk to the BCM and get it to play nice. The last iteration used an EDIS8 36-1 trigger wheel with a set of Ls finned truck coils mounted to the valve covers and an explorer cam sync / oil pump driver. Megasquirt used to be the end all of inexpensive stand alone ecu's but theyve since gotten too big for their own good. So if you want to try a cheap open source ecu thats hust as functional as anything made by holley , fast, edelbrock etc.. Then check out Speeduino, you can get a fully.assembled board from guys like detonation ems for $90 That handles fuel, and timing up to 16 cylinders in case thats your thing, you tune it with Tuner Studios free version or if you want things like a "self tune" feature thatll tune everything but wide open throttle than there is a paid version you can get. Ok anyway rant over

To say that Ford "lost their mind" by putting a V10 in a Mustang eliminates you from adult conversation. They "lost their mind" when they didn't follow through with it!

I've had mustangs going back my the first, a dark green 66 fast back 4bbl 4 spd and The only afftermarket parts was a crane cam and a 8 trek' craig power play distortin' machine, the first tape was the white cream ...ahhh' the days. I bought it instead of a red 66 conv. with the HiPo premium, 289. But today,, 50 years later, would I buy the factory 10 cyl mustang in the vid with a truck motor? Hell yes I would buy it!

Bring this to the next Gen GT350

Once you started listing all the power figures and how awesome the car could’ve been, I lost it🤣. Made me so sad.