The RARE Car Ford Built To Destroy The Chrysler 426 Hemi - 1969 Mustang Boss 429

[@robertchristie9434]

I started working as a Tool and Die apprentice at the Dearborn Assembly plant Ford Rouge complex in Dearborn Michigan starting in September 1968 after mustering out of the Army. We were assembling all types of '69 Mustangs and Cougars including the 428 Cobra Jets, 351 Hypo Mach 1's, 429 and 302 Bosses. In the pre shipping area one day were 2 black 427 SOHC fastbacks being prepped for the test track. No special decals or striping and very mean, all business looking. We also assembled the Shelby GT350s and 500s, less front-end trim and other unique items. They were completed at Carroll Shelby's facility. A lot of skunkworks one offs going on also. Great time and place to be for a gearhead after 2 years in the Infantry.

[@193322009]

Back in the 60s I owned a beautiful blue 1969 Boss 429. It was a great driver and I loved it. The only hard thing to do was to change the left side, rear spark plug because of a very tight space to do it. It was reliable and fun to drive, but like a fool, I sold it later to buy a 1970 Shelby GT500. It also was a fun machine to drive, but later, I wished I would have kept the Boss 429. If you have one, hang on to it.

[@stgraves260]

That’s funny because my dads best friend had a 69 cougar with the Boss 429 and could not keep up with my dads 1970 Challenger with a 383 Magnum. Both cars were equipped with manual 4spds. They would tells us kid’s story about them racing each other. Even Tommy, the owner of the 429 equipped cougar said he could not keep up with my dads challenger, and now you saying the 429 was made to outrun the 426 Hemi that would smoke my dads 383 Magnum Challenger. Thanks for the laugh. Very entertaining.

[@frankjohnson6342]

The Boss 429 only came in a Mustang body and nothing else.

[@garylam6233]

My father-in-law built a 429 for his 1977 ford f-150 . It’s still running in the same truck with 100,000 miles still going strong . It’s not geared for high performance It’s a 4wd with granny gear 4sp but the way it lopes and the sound and torque feel makes me believe in the right car body and gears it would be a beast

[@recoverinyankee6458]

The video contains disjointed information, disjointed images, and disjointed video clips. That being said, the '69 Ford Mustang Boss 429 is a good-looking vehicle with a muscular attitude. Mopar still rules!

[@maxr4448]

My cousin Bobby ordered a 1970 Grabber Blue Mustang 429, before he went off to Nam. His parents had the dealership ship it home. Because nobody could drive it. When Bobby came home on leave for the Family 4th of July celebration, He finally got to see his car. He took all the Uncles for a ride, including my DAD. When my Dad got out of the Mustang>>> He told Everybody! Nobody is riding in this car here. My Dad was a Fireman. He finally told my mother he was on his seat holding on to anything he could in that car. So b1dartman>> the "Mustang 429" you were riding in was prolly a 302.

[@Darren-su2gm]

Ford did not build the 1969 Boss 429 Mustang hemi V8 and the 1970 Boss 429 Mustang hemi V8 to compete with Chryslers 426 hemi V8's.The Boss 429 hemi V8's were for the engine to be used in Nascar cars.👍

[@davidphillips3953]

Your nuts! The hemi was built for nascar then nascar said you have to put em in street cars to use em in nascar so that's what they did not the other way around. Later ford did exactly the same thing with the 429 boss so they too could run it in nascar. Go learn some history before spouting off fake news.

[@mylanmiller9656]

the boss 429 was not intended to Destroy the 426 hemi, It was intended to homologate the Engine into the NASCAR Rule book. If the Boss 429 had been intended to destroy the 426 hemi, it would have had a wild Cam and enough Carb to make power. The street Version of Boss 429 was a badly detuned version of the Race car engine used in NASCAR. The boss 429 had the same rated power as the Corvette 350 at 375 HP.

[@Cuspidor-spit-n-more]

@@mylanmiller9656 take this to the bank.t he 429 engine was build specifically to challenge the 426 cu. In. Engine. Ford was not competitive against the 426, fords days of dormancy was over. They built the 439 with semi hemi heads and put bigger valves in the head. It was rated at 375 hp by the ford company for insurance reasons, the engine produce around 500 hp and with some tinkering it would go over 500 hp. It really a good engine, neither was the 460, you could change parts on one engine to the other, you might say they were the same engine, it only lasted six years. Chrysler and the 426 dominated racing until ford built the 429 just for the 426 hemi, regardless of what you say, I know because that era was my racing days. The hemi dominated racing and ford had to do something. Chrysler had the hemi outlawed in 1966, NAS. Car demanded the engine be changed and they said no and sit out the 67 season and ford was the big dog on the block in 2967. NASCAR met with ford and Chrysler and Chrysler and Chrysler agreed to drop the ci in to 405, most people don’t know that, didn’t help ford that much so they stopped making the engine in 1973.

[@frankjohnson6342]

I think that 375 HP was being overly generous with what that motor put out, it couldn’t even beat the Boss 351 or Boss 302 Mustangs. Massive soda can sized ports and huge valves meant the street version of this motor could not even reach enough RPM’s to make it to where the engine could make use of high RPM only design. A high 14 second 1/4 mile time at best going downhill with a stiff tailwind. A power stroke diesel would perform better than this joke. I doubt it would even beat the old style 392 Hemi from the 50’s and early 60’s. It was a sharp looking car that could never deliver.

[@kelvinh8327]

0 - 60 in 7.1 seconds is not that flash. My Seltos GTLine does it in 7.5 seconds.

[@robertparker6654]

In NASCAR trim, what the engine was designed for , try twice that.

[@55whiplash]

I was more enamored with the Boss 302, Z28, and AAR Cuda/Challenger TA. Big blocks in Pony Cars were more of a spectacle than something you'd want to drive.

[@kurtpoblenz2741]

The boss 429 was a dog on the street. Most people preferred the small block 302. Chryslers Hemi DOMINATED pro stock the first two years, which is the class the mustang would have raced in. The 426 Hemi was leaps & bounds more successful than the 429 ford.

[@ezl8002]

I had a 1967 Plymouth GTX 426 Hemi and after 1967 the engines were detuned by adding hydraulic lifters. The 1966 through 1967 all solid lifters and RPM was not limited. That engine was the best one that I ever owned plus it was trouble free and I still have the line-sheet from it..

[@SuperSMOKE46]

Had 3 fast carsin 69 a Camaro SS 350/300 hp a Chevelle SS 39/325 hp and a 69 GTO Judge 400/366 hp they all were fun cars but now i went to a 2014 GT Premium 360 hp 2020 Shelby GT350 526 to a 2021 Mach 1 480 hp and its a great car

[@bargeman100]

Your pictures don't match the narration.

[@matrox]

A.I videos need to be banned from KZbin. Or at least a warning should be displayed indicating AI bullshit.

[@screamingeagle-rt1kj]

In 1966 I got my drivers license I do not remember too many GTO’s Ever beaten up any mopar Some 429s May have beat Some 426 hemis Now Woodward Ave., Ford had Nothing to bring mopar and Gm Dominated but mopar Was king you can’t prove me wrong

[@Darren-su2gm]

Ford's SVT team in the 1990's built a 1996 ford mistang Cobra with a 529 cubic inch version of the Boss429 Hemi V8 with over 800 horsepower to Drag Race a 1996 Chevrolet Camaro SS with a big block.Ford's mustang Cobra won the 1/4 mile dragrace but both cars malfuctioned after the race.👍

[@matrox]

Petty had the edge with the Hemi not only because of the Hemi but in the early 70s because the aerodynamic Superbird body.

[@harryblackburn9556]

Instead it destroyed itself. The engine bay in that car was to restrictive for that engine. It couldn't breath worth a spit, restrictive exhausts and an anemic carb. Like Chryslers Hemi was never designed or intended for street use. It was like removing a lung from a marathon runner and expecting them to perform at the same level when they had 2. Would have been better suited in a car with room to maneuver or redesign the Mustang's engine bay around the engine to allow it to BREATH.

[@buzzwaldron6195]

BS, the street Boss 429 design was simply flawed... perhaps intentionally for insurance reasons...

[@robertparker6654]

​16:24 ​​@@buzzwaldron6195not true, detuned for the street to make it streetable, won multiple championships in Mercury Cyclones and Talladega Torinos, in 1969 and 1970. Made for NASCAR , not really streetable.

[@robertparker6654]

It was built to homologate the Boss 429 engine for NASCAR, 500 1969 Boss 429 had to be built for the engine to be legal for use in NASCAR. In 69 it won the championship in the Talladega Torinos and 70 in the Mercury Super Cyclone SpoilerII. It was made for all out racing in NASCAR

[@toddmesecar9558]

It is well known the fords engine bays were restrictive and did not allow for large enough manifolds to breathe​@@robertparker6654

[@toddmesecar9558]

The shock towers were directly in the way

[@jamesthornton9399]

Use the right cars!

[@scottrobertson6949]

Very disappointing presentation. Images weren't related to the rambling commentary. Is this what you get when you ask AI to do it for you? 😢

[@johnjenkinson1311]

Could not beat my 69 R/T 440 Charger.😂

[@RobertGuidry-f3f]

From the Steve McQueen movie Bullit. The Hero car was one of these, the Villain car was a Dodge Charger with a 440 Magnum. The Mustang had to be souped up to keep up with the stock out of the box MOPAR.

[@yankeetraveler1118]

No. The Bullitt car was a '68 390 GT.

[@RobertGuidry-f3f]

@@yankeetraveler1118 Thank you.

[@jeffnorbert1871]

​@@yankeetraveler1118right and by no means could keep up with the 440.

[@stgraves260]

If any of this was even true than the 429 would be used in drag races today, but it’s not. I would say like 95% of all you dragsters, funny cars, the majority of them all run HEMI’s for a reason. It doesn’t matter if it’s a Ford, Chevy, or a Dodge, there is a HEMI under the hood. John Force that was sponsored by Ford, drove a Ford Mustangs Funny Car and won all his trophies with a HEMI under the hood. His Daughter Ashley Forest went on to race Dragsters and it was powered by a HEMI. I do believe now in 2024 and maybe a few years before there are actually Ford and Chevy motors under the hoods but not many. I’m not nocking Ford, Chevy, Dodge but that HEMI is a unbelievable motor, all thanks to those heads. If that 429 can’t keep up with a 383 Magnum it is definitely not keeping up with a HEMI.

[@matrox]

Ford has a history of making their engines physically big. Look at todays 5.0 on the Mustang, its a big as a Hemi.

[@mustangecoboosthpp3869]

You clearly don't know much about the Ford Mustang BOSS 429, first off the engine was a dog because it was designed for NASCAR and the RPM range was all wrong for the street. Second the engine was to heavy putting far to much weight on the frontend. Smokey Yunick was short and to the point about the BOSS 429, he called it crap. The only reason they are sought after is because only a limited number of them were ever built. Before the Ford fans start saying anything about Smokey Yunick he was working with Ford at the time because Bunkie Knudsen was the CEO of Ford at that time.

[@cjespers]

Agreed. The Boss 429 could kick ass, but needed some work from what Ford delivered. It was cool, but not that fast. The 429CJ was also disappointing. Those cj heads ports were not that good. 429 PI heads with Cj valves fitted worked better.

[@DuaneSeidr]

Yet still in modern muscle car shoot out had the FASTEST 0-60. 5.06 seconds. It is on KZbin. Watch it,shut up,and apologize

[@DuaneSeidr]

@@cjespersActually it still has the fastest 0-60 in the modern muscle car shootout. 5.06 seconds. Faster than the ZL-1 Slowmaro. That’s right you can see on KZbin musclecar shootout!!! So shut up and apologize

[@DuaneSeidr]

The Boss beat ALL in accelerating in KZbin modern shootout. Even the PIG dodge hemi,which was way heavier than the boss,which was a mix of chevys 396 and Chrysler’s hemi.

[@DuaneSeidr]

YOU know nothing!

[@stuckinmygarage6220]

This is a very poorly synchronized video. Talks too much and pics don't match the conversation.

[@tompastian3447]

True. All kinds of pics that don't match the narrative. He's describing the interior and showing pics of aftermarket front seats with custom steering wheel. The Boss 429 Mustang was not intended to be a stock car. The engine may have been similar to 429 engines in stock cars.

[@stuckinmygarage6220]

@@tompastian3447 Good morning. I'm guessing, now, that it's either bot or some mash of parts they fitted? Oh well. I admit I like pics.

[@buzzwaldron6195]

Yeah, Chrysler Hemi discussion from 5:40 - 6:00 shows everything but a Chrysler Hemi...

[@tompastian3447]

@@stuckinmygarage6220 The Boss 429 Mustangs were not Mach 1's. Mach 1 Mustangs commonly had 428 emblems on the hood scoop, which hood scoop was attached to the carb and protruded through the hood. The Boss 429 scoop is part of the hood, painted to match the car. the one engine that was not available among them was the engine Perry was most interested in, the 351 Cleveland. In 1970, the Cleveland became available in the Mustang, in both 2V and 4V versions; The 69 Mach 1 and 69 / 70 Shelbys were the best looking Mustangs of all time to date. The 69 Mach 1 had ribbed rocker panels and hood pins and cables. The trim was stunning, but expensive. The following year Larry Shinoda cheapened the trim.

[@stuckinmygarage6220]

@@tompastian3447 I'm mostly a Mopar guy, but you don't have to twist my arm to agree with you. Those were beautiful!

[@user-Terracer]

The hemis were "rarely unbeatable"? huh?

[@rockychristakes951]

Years ago this dude was allowed to test some classic muscle cars and he was most impressed with the Boss 429 Mustang. He commented how it just kept shredding tires

[@ronaldbrouhard1247]

I believe EVERYONE underrated their Muscle car mills.

[@BeatersRus]

what a crappy video,most of your pics dont even match the talking points,AND you completely Forgot AMC,and just mentioned the big 3 instead. heres your clue,amc had the Transam series Locked Up,and they never even made a big block. you made a video about fords big block versus the mopar hemi and didnt even Mention the oldsmobile Hemi that was in development. you also didnt mention the dual cam hemi that ford was experimenting with. this video is highly inaccurate and a waste of time.

[@daveforeman6931]

What we get from A.I. created crap.

[@mylanmiller9656]

The 429 NASCAR was so Dominant in NASCAR that Even Richard Petty switched to ford, It was not until the winged wonder Mopar cars were allowed and the Ford arrow cars were not allowed was when the Hemi was a dominant factor.

[@MarkWG]

Your video shots rarely lined up with the audio. Bad editing. The Boss 429 engine was actually rated at 525hp, but was never publicized.

[@AntiZOGZone]

😂 BS 525 H.P.? Never!

[@robertparker6654]

Check Nascar tuned Boss 429, that and much more..lots of false info here, do your own research and find out the truth

[@robertparker6654]

Nascar tuned that and much more try 580 to 590, 25 to 35 more than the hemi

[@guyhummel2847]

The most sexy mustang of all!!

[@glenncowie6536]

My 2 Favorite car's, Ford, and Mopar.

[@michaelrapoza4995]

Should've put in a Torino

[@RareWheelsStories]

Yeah. That would have made much more sense.

[@robertparker6654]

FORD did in 68,69,70 71,72,73, and74. David Pearson won the championship in 69 and 70 with the Boss engine in Torinos and Mercury Cyclones. FACT

[@Darren-su2gm]

Ford could've built the Boss 429 hemi to beat the 426 hemi's if ford built them too.👍🇺🇸

[@Notfiveo0]

Back then the only aerodynamic bodies I saw were on the beach……in bikinis 👙.

[@johnwalbridge2430]

You obviously weren't there.

[@Big88Country]

This could have been a good video if they would have been showing what the AI was talking about. Come on guys, this just don't get it done!

[@williamjameson478]

The BOSS 429 was a copy of the 426. In 1970 Chrysler took For to court to prove they copied the 426. Chrysler won the court battle, and Ford had to stop production of the 429. You really should get your facts together before doing a production like this!

[@larrydriemel6242]

🤣🤣🤣

[@robertparker6654]

What conic book did you read that in?

[@billyfoster3223]

Ok, harryblackburn9556, hmm, the Boss 429 isn't for you!!😂😆

[@harryblackburn9556]

You make about as much sense as Joe Biden.

[@Cuspidor-spit-n-more]

My drag racing years was during that same era, 1957\up through that whole time. The engine actually came out in 1951 in chryslers, they just grew and came to be what they are today, still kicking ford snd chevy asses. My first hemi was a 1958, Chrysler 300 D, stock off the show room floor and would damn near reach the speedometer’s top speed. It topped out at about 140 to 150 mph. The odometer read 180. They way I remember it, the Boss 429, wasn’t good on the strip or street.

[@artbrookey3468]

I admit, Ford tried, and failed.

[@matrox]

GM didn't need an engine to beat the Hemi at NASCAR because by the mid 60s GM had pulled out of NASCAR racing voluntarily because GM was selling to many cars and were under the threat of the Government of being broken up as a monopoly under the LB Johnson DemocRAT administration. GM played it safe by laying low during this period. So GM was free to focus on street performance which they still dominated. The street hemi was comparable to Chevy 427s. In late 60s and1970 the 454s and 455s out performed the Hemi on average as street machines as the Hemi was still hard to tune to maintain good performance.

[@bdogjr7779]

《HEMI》

[@Starchild4084]

It didn’t work! 426 Hemi was far superior over any big block ford ever put out! That’s a fact ! Look at NHRA and NASCAR in the 1960’ and early 1970’s Your trying to re-write history! Stop it . Car enthusiasts know the facts !

[@MegaTechnoteacher]

MOPAR OR NO CAR. That's why Petty is the king.

[@richardisner3671]

Do some research. Petty also drove Fords in the 60's. Also drove Pontiacs later on.

[@robertparker6654]

True Petty won nine races in 1969 he didn't want to drive for Dodge opting from Chrysler instead which came out in 1970.. He finished second to David Pearson in 69 in the championship . Driving the same Fords, theMercury Comet Cyclone 2with 427 tunnel port engines. Later with the Boss shotgun hemis after enough cars were made to homologate that engine later that year.

[@matrox]

This is some A.I Bullshit.

[@duroshebanja6810]

Ford engine bays were ridiculously small. Only GM put adequately large engine bays in their vehicles.

[@mylanmiller9656]

The boss 9 was never a powerhouse, it was a detuned model of the 429 NASCAR engine Ford had to install this engine into a street legal Car. Ford had to build 500 Cars with this engine so the Boss 429 was built! Performance was never the intension of the Boss 429 or it would not have had a tiny carb and low performance cam. NASCAR had screwed Ford twice before with the 427 high riser and the 427 Cammer, ford made sure this time NASCAR would have to except their engine.

[@rockychristakes951]

Insurance companies killed muscle cars

[@maxr4448]

Because of GREED! Insurance companies are EVIL!

[@duroshebanja6810]

How about the Gubmint with emissions reductions?

[@kellyginter9626]

it didnt work out to well for the ford company as hemis are still ruling the drag strips along with big block chevys

[@joepilbeam4722]

It was a nice try anyway.

[@bryanbryan7080]

this guy always includes irrelevant pics.

[@davidlang9939]

AI BS!!

[@johndowney4461]

Hemi Dart and Cuda were the fastest they are the only cars that have their own class in NHRA The Daytona and Superbirds were the fastest Nascar's ever built Mopar built the fastest cars in the 60s and early 70s

[@mikelight495]

no doubt about what you have said. the Daytona & dart were purpose built for racing. their purpose was mainly marketing. riding the fine line of the rule book. Ford & Chevrolet had no real idea of the power of how factory sponsored racing could assist marketing. Ford & Chevy were not sponsoring factory teams. in the end it was all for fun. we would stay up all night arguing like politicians. drinking beer. as far as racing we would save it for the sanctioned safety at the track. neither of us ever dared to run for pink slips. our modifications were done at home hoping we would not spin a bearing, swallow a valve.

[@matrox]

13:20 That ain't no stock interior!! The stock had woodgrain no effing Carbon Fiber. Fake ass A.I shit.

[@johnwesley9000]

Yea that didn't happen.😏😆

[@GaryRoutt]

I hear a lot of crying from the anti Ford crowd... Get you some Vagisil for your brusies ...

[@davidjenson8124]

The Boss 429 was a loser right out of the gate. Completely useless for NHRA Drag racing

[@stuckinmygarage6220]

@5:30 'rarely unbeatable ' ?

[@tompastian3447]

Yes, I noticed that. The guy didn't proof read his own narrative.

[@stuckinmygarage6220]

@@tompastian3447 a BOT , maybe?

[@DreamlandCustoms]

Who ever did this needs to re think life

[@fredc8346]

yeah the 500 rare ones

[@mark-wn5ek]

This word salad brought to you by Kamala

[@jonesy4588]

69 Z/28 cross ram destroyed both of them

[@txhansolo22]

indeed. my older cousin bought one brand new in 69 with the full package, 2 x 4 barrels on the aluminum midrange cross ram and a Muncie rock crusher 4 spd and 4.10 gears. made for an interesting match race with another older cousin who'd just bought a 1970 Chevelle 454 SS. the Camaro won by a nose and they both got the front wheels up when they launched.

[@robertparker6654]

No Camaro raced in 69 and 70, the Boss429 was made for all out NASCAR not streetable at all in NASCAR trim,Chevy didn't have an engine that would stay together for 500 miles back then.

[@frankjohnson6342]

⁠@@txhansolo22 What a bunch of crap! A just bought 454 Chevelle that did wheelies right off the dealer lot only to be beaten 302 Camaro. Sure THAT happened 😂😂 then the alarm clock went off and you woke up.

[@BeatersRus]

@@frankjohnson6342 considering ive been in 302 dz z28`s,id agree with your statement. those 302`s didnt hit their stride till around 4000 rpm. the op who made that statement about any 302`s beating hemis way up there is a liar.

[@txhansolo22]

@@frankjohnson6342 jealous much troll boi?

[@WilliamMowbray-o4k]

what did it do it was a dud copy and those quarter mile times where bull shit.

[@gordanderson2586]

I was riding in a 429 mustang and we were racing a 340 dart swinger. the swinger beat us by at least 15 car lengths in a 1/4 mile.

[@tednewcomb1048]

15 ... Car lengths ... something's off there ...

[@eddiebowens1919]

Wow .....are you a big boy

[@maxr4448]

I don't think so>>>>

[@b1dartman]

I had a Friend who had a Boss 429 Mustang. I Completly Blew the doors off it numerous times with my lowly Plymouth 340 4 speed Duster which I paid $2,700 for brand New. That thing could never beat any Car I knew of with a 426 Hemi.

[@tomwilliams5598]

That 340 Duster blew my doors off my 383 road runner

[@maxr4448]

I would die for a 340 Duster. Be Blessed you had one. Brothers in Mopar🙏

[@duroshebanja6810]

@@maxr4448 I dusted off a 340 Duster with a 302 Comet GT. It was built, but still a 302.

[@Welcometofacsistube]

Lol no you didnt. ​@@duroshebanja6810