By '73 they were killing the compression, so had to kill the cam for acceptable low end power. Richard Holdener test the 1970 351C 4v and said it was the most under rated motor ever from any manufacturer. It was rated at 300 in '70 and 285 in '71 but made 360 dyno hp. It made more than the 1970 high compression solid lifter Chevrolet 350 LT1 motor rated at 370! Of course the BOSS 351C with solid lifters mad even more. And by the way for all those "the 2v's are better for the street guys" those giant ports made more torque than the Chevy too! Open Chamber 2V heads will work but you have to fiddle with pistons to get the compression up so you can run a larger cam. The closed chamber 4v's are where it is at for race or street.
Inexpensive port plates fix the 4V Cleveland head ports. Yeah. The problem with the American 2V heads was the horrible open chamber design. Australia had the perfect solution in their quench chamber 2V sized heads :)
@@331Grabber I ran a set of Ported Australian 2V,s, with Larger Valves, same as 4V heads, 2.19 and 1.71, then on same exact Engine tried Unported 4V Open Chamber Heads, hands down the Australian Heads ran Way Better, Throughout the Entire RPM range, Engine felt Way Stronger. But few years later borrowed my Brother's 4V Open Chamber Heads that had Lot's of Work done, had those Port Plates and everything, Car made most Power, the Australian,s felt a little stronger Down Low, but after 4,000 rpm those Worked 4V,s definitely took over, ran a very large Solid Roller with those Heads. But couldn't keep up my Compression with the Open Chambers, compared to my Australian Heads. Me and my brother Never had any Closed Chamber 4V,s there getting very rare nowadays.
@@badass6.0powerstroke10i have a ported Aussie set on a 383 stroker and honestly it did not get going until 5500 RPM and then it was a rocket. If a 2V Aussie head is ported properly and with correct valve work it can scream. 3V heads kill both though I hear.
@@jamesmedina2062 Yes, i heard those CHI 3V Heads work awesome, i never got to try a set out, switched from Cleveland Power to Stroked 521 BBF, my brother ended up spinning some rod bearings in his Cleveland, so he got out of the race car stuff a few years ago, he still holding onto the car, but sold all his Cleveland stuff and his C-6. I'm trying to get him to buy my 521, so i can finally go Aftermarket Block and go 572 or 598.
Bought the last Q-code 351-4V Mach-1 that Mosart & Keller Ford in Houston had on the lot in Nov-73. It was the twin to this one, paint cod 4B. My friends all called it the pickle. The interior was the same color, am/fm 8track, fold down back seat, with AC. Wish I still had her today
My friend had a 73 Mach 1. He said it had the 351 w/SCJ heads. I remember when he had the intake off the intake runners I could nearly fit a tennis ball in. On the street from a dead stop I'd kill him with my stock 90 5.0L notchback 5spd. Until about 100mph and he'd reel me in and pass me. I still love the looks of these Mustangs. Some don't like the styling....I loved them.
What a beautiful car. Those 4bbl Clevelands are dogs down low, but they pick up and scream above 4k. We used to build up the intake runners with epoxy because they were too big. The better choice was always the 2bbl heads. Perfect for the street.
There is no such thing as 351w scj heads. 4 Barrel Cleveland heads and boss 351 heads no such thing as SCJ heads for the 351. They had 428 and 429 scj heads those are for Fe Motors and 385 series Motors respectively.
1985, 20 years old bought a 1973 with 351 Q-code, C-6 & 9 inch for $1,500 in North Fort Myers FL. My test ride was pulling it out of the used car lot & punched it. Smoked the skinny right tire all the way down to the next stop sign. Yup, I'll take it !! Built the motor up some, raced it but life happened & never got to finish her. I'm a Mopar guy, but 73' Mach 1 hands down, favorite car on the planet.
I had a 1973 Mach 1 with a 351 Cleveland but only a 2-barrel carb; it was metallic gold with black trim. It had plenty of power for me, but was not as awesome as the earlier models before all the performance restrictions for gas mileage and pollution stuff. I think it was rated at 266 hp at the flyweel according to a Chilton's book. On the highway, it bested at 13 mi/gal.
Nope, sry to dissapoint you but the 73 351 2bbl was rated at 164 hp, the 351 4bbl cj was rated at 266 hp, i owned a 73 mach1 with one of the last 351 cj engines with the 4bbl heads, 4 bolt mains and a dual point dist.
If only Ford had made a 1970 Boss 351 instead of waiting to put that amazing engine into the bloated and fugly ‘71. BTW, I had a ‘70 Mach 1 in the same lime green metallic as the car in the video.
Any details on the motor?what were the numbers,mods? I'm building a 73 351cj motor and any help is much appreciated. Are these the stock q code heads or aftermarket?
By '73 they were killing the compression, so had to kill the cam for acceptable low end power. Richard Holdener test the 1970 351C 4v and said it was the most under rated motor ever from any manufacturer. It was rated at 300 in '70 and 285 in '71 but made 360 dyno hp. It made more than the 1970 high compression solid lifter Chevrolet 350 LT1 motor rated at 370! Of course the BOSS 351C with solid lifters mad even more. And by the way for all those "the 2v's are better for the street guys" those giant ports made more torque than the Chevy too! Open Chamber 2V heads will work but you have to fiddle with pistons to get the compression up so you can run a larger cam. The closed chamber 4v's are where it is at for race or street.
Inexpensive port plates fix the 4V Cleveland head ports. Yeah. The problem with the American 2V heads was the horrible open chamber design. Australia had the perfect solution in their quench chamber 2V sized heads :)
@@331Grabber the open chamber 2 v work good on my 400 with 268 cam and 4 v intake
@@331Grabber I ran a set of Ported Australian 2V,s, with Larger Valves, same as 4V heads, 2.19 and 1.71, then on same exact Engine tried Unported 4V Open Chamber Heads, hands down the Australian Heads ran Way Better, Throughout the Entire RPM range, Engine felt Way Stronger. But few years later borrowed my Brother's 4V Open Chamber Heads that had Lot's of Work done, had those Port Plates and everything, Car made most Power, the Australian,s felt a little stronger Down Low, but after 4,000 rpm those Worked 4V,s definitely took over, ran a very large Solid Roller with those Heads. But couldn't keep up my Compression with the Open Chambers, compared to my Australian Heads. Me and my brother Never had any Closed Chamber 4V,s there getting very rare nowadays.
@@badass6.0powerstroke10i have a ported Aussie set on a 383 stroker and honestly it did not get going until 5500 RPM and then it was a rocket. If a 2V Aussie head is ported properly and with correct valve work it can scream. 3V heads kill both though I hear.
@@jamesmedina2062 Yes, i heard those CHI 3V Heads work awesome, i never got to try a set out, switched from Cleveland Power to Stroked 521 BBF, my brother ended up spinning some rod bearings in his Cleveland, so he got out of the race car stuff a few years ago, he still holding onto the car, but sold all his Cleveland stuff and his C-6. I'm trying to get him to buy my 521, so i can finally go Aftermarket Block and go 572 or 598.
Bought the last Q-code 351-4V Mach-1 that Mosart & Keller Ford in Houston had on the lot in Nov-73. It was the twin to this one, paint cod 4B. My friends all called it the pickle. The interior was the same color, am/fm 8track, fold down back seat, with AC. Wish I still had her today
My friend had a 73 Mach 1. He said it had the 351 w/SCJ heads. I remember when he had the intake off the intake runners I could nearly fit a tennis ball in. On the street from a dead stop I'd kill him with my stock 90 5.0L notchback 5spd. Until about 100mph and he'd reel me in and pass me. I still love the looks of these Mustangs. Some don't like the styling....I loved them.
What a beautiful car. Those 4bbl Clevelands are dogs down low, but they pick up and scream above 4k. We used to build up the intake runners with epoxy because they were too big. The better choice was always the 2bbl heads. Perfect for the street.
There is no such thing as 351w scj heads. 4 Barrel Cleveland heads and boss 351 heads no such thing as SCJ heads for the 351. They had 428 and 429 scj heads those are for Fe Motors and 385 series Motors respectively.
They did make 351 cj heads but not scj. And they were on the Cleveland’s not Windsor
No such thing as scj heads, its either 351 open chamber or closed chamber. Altho the 351 Boss was called a scj in some circles.
1985, 20 years old bought a 1973 with 351 Q-code, C-6 & 9 inch for $1,500 in North Fort Myers FL. My test ride was pulling it out of the used car lot & punched it. Smoked the skinny right tire all the way down to the next stop sign. Yup, I'll take it !! Built the motor up some, raced it but life happened & never got to finish her. I'm a Mopar guy, but 73' Mach 1 hands down, favorite car on the planet.
Nice!! Mopars are nice too. So was that Mustang all stock?
This has got to be my favorite color and year of Mustang ever.
Why post an awesome video with no stats ? This brings the video back into the ordinary .
I feel ripped off .
That's got to be the best sounding exhaust I've ever heard I'd love to know what mufflers you've got under that car
Maybe flowmaster?
351 cleveland mufflers
Beautiful video and Stang! I love the Boss, Cobra Jet, and Cleveland, 351 Ford engines. Thanks for sharing.
I had a 1973 Mach 1 with a 351 Cleveland but only a 2-barrel carb; it was metallic gold with black trim. It had plenty of power for me, but was not as awesome as the earlier models before all the performance restrictions for gas mileage and pollution stuff. I think it was rated at 266 hp at the flyweel according to a Chilton's book. On the highway, it bested at 13 mi/gal.
I have a couple of closed chamber 4V 351C cars. I may try an efi conversion to better atomization, mileage.
Nope, sry to dissapoint you but the 73 351 2bbl was rated at 164 hp, the 351 4bbl cj was rated at 266 hp, i owned a 73 mach1 with one of the last 351 cj engines with the 4bbl heads, 4 bolt mains and a dual point dist.
@@grandcrappydid you try the EFI?
@@jamesmedina2062 still a future project my man.
Sooo???.....What are the numbers??
Sounds Healthy !👍🇺🇸
It's a beautifully crafted big size car with excellent sound. The sound itself costs $100,000. Thanks.
Nice dude! If I find a place that does that, I should consider putting my ‘72 Mustang Mach 1 on the dyno, and turn her loose
Se escucha como un nascar!
There’s hope for mine too
Sounds healthy
what was the h p on the pull
and....??
most frustrating video ever
If only Ford had made a 1970 Boss 351 instead of waiting to put that amazing engine into the bloated and fugly ‘71. BTW, I had a ‘70 Mach 1 in the same lime green metallic as the car in the video.
SWEET 😍
ME FORD MAN.
Whats up with the rear wheel? Center cap has come loose!!!
What the hell is that about?
Mufflers?
NO NUMBERS?
Just kidding it roars
Any details on the motor?what were the numbers,mods? I'm building a 73 351cj motor and any help is much appreciated. Are these the stock q code heads or aftermarket?
I have one too! What have ya done to yours?
What is the max recommended rpm for a stock 351 cleveland
there were so many Clevelands that you would have to be more specific.
That one
El 351 es un cobra???
He didn't Rev it nearly high enough you need to take a Cleveland up over six grand then it really starts making power
Q code?
Not much info provided i have a Qcode on you tube
230 Hp. !
Such an ugly car
I know everyone in town rides her, but its disrespectful to call your mom a car
Your Prius is so much better.
@@OsakaBancho 😂😂
I know your moms ugly but you dont got to call your imaginary family a car😂
@@OsakaBanchoright🤣