Unity MotorSports channel is dedicated to the guy or gal who is into the Car scene... Our Videos are a means for the Hot Rodding Culture of the past to live on in the future by documenting its rich history!! We will be doing How-to Videos, Dyno Tests, Drag Strip tests... So come along for the ride and let's make some Power
It is this simple , I worked for a speed shop when I was a teenager , my boss was a very knowledgeable guy. He always told me the vacuum advance always went to what he called progressive vacuum . So say your leaving a red light as you give your car gas it advances the timing. If you plug your vacuum line in and at idle and your timing advances its wrong.
I had a demon that the ide ones were gone I took two Pieces of the rubber off a wire then put two pieces of a wd 40 straw in side that an it ran killer lol you made me remember that when was talking about the straw fun the shit we do when where young an wanting to ride
If you go back to 1970 and you're talking about the great engines you have to mention the Hemi you have to mention a 427 Ford and a 428 Ford and the 429 Chevrolet 454 LS6 those are your top picks there are many more but those are the best with the most horsepower most of them have between 450 and 500 horsepower Factory rated and you could get them up to 700 what you have now is completely different and they are completely unaffordable Back in 1970 anybody can buy one of these other hot cars they were less than $6,000 now they're over 100 grand
Love watching both you guys. DV. I've been reading your books for a long time. Every time you speak I learn something. Keep up the great work brother thank you
has somebody who has built mini Clevelands there's nothing Cleveland about that motor the Cleveland intake Port design was a direct copy of the Mark II mystery motor without a raised angle that's why it flows better when you fill the bottom of the floorthen you have to cut half the exhaust Port often put a plate on there to change the direction then it'll flow decent before that it wasn't really that great of a design it was just big ports
I have only owned one Hemi engine in my life. It was in a low budget blown alcohol funny car that I had back in the late 80's through early 90's. It was a 500 Cubic inch Keith Black bottom end with Bill Miller pistons 0-gap rings, Lunati cam, Brad Anderson first gen fat heads, and intake manifold. The blower was a Mert Littlefield high helix with an Enderle fuel injection, and a Crower glide clutch. It was tuned way down only running one mag, one set of plugs and only about 38-degrees all in timing at 3800 RPM. The blower was only running 15% overdrive. It could run in the 7's all day long at about 180 MPH at around 4800 RPM. All I would do is change the oil, and run the valves. I could get about 100 runs down the 1/4 mile before having to put a new set of piston rings and valve keepers on it.
Yes Andy that is a great video and I know you are a Ford man so thank you for making it. And I know Ford made some very high performance engines also but their numbers were fairly small compared to the 426 Hemi. Chevrolet made a bunch of high performance engines also but same situation, very few sold.
Nothing looks more bad ass than seeing a 426 sitting under the hood of what ever model and the spark plug wires sitting in the middle of those monster Valve covers. 2 4 barrel carbs on a crossram manifold or in line manifold. The HEMI is KING
I have a question 🙋♂️ so when I set my initial timing I warm up the engine to operating temperature do I plug my vacuum advance first before hooking it up to manifold vacuum or do I set the timing with the distributor connected to manifold vacuum right off the bat ?
I recently had some clown arguing with me about these engines, claiming his supercharged LS Vette was faster. Even after I suggested putting a blower on the 426 Hemi would easily eat his LS he continued claiming he was right. I hate trying to reason with a narcissist who has never turned wrenches and only buys his cars assembled. I'm building a 426 Hemi for my 71 Cuda. I build my toys. I don't listen to big mouths who can't build anything except a fart.
You know what I'm tired of as soon as you go to subscribe or do something leave a comment you got these damn commercials interrupting you that s*** there pisses me off
Great design fantastic design the only flaw that I ever found with this was the actual overhead cam chain drive that change structures that can geometry goes out of whack you're screwed you're going to drop a valve dude all day everyday so I mean it's a decent design don't get me wrong but that's why we use belt drives today why because belts don't stretch as much
As it relates to "Bill France outlawing the SOHC and the Doomsday HEMI," in actually NASCAR mandated that ANY engine raced had to be an option for the public. Which at that time, required 500 copies. Both Ford and Chrysler shelved their HEMIs for NASCAR in 1965. Ford went on to dominate NASCAR that year. Forcing Chrysler to offer the 426 Street HEMI as an option in '66. At approximately $1,000 it was quite expensive at the time. In comparison the 427 SOHC was about $10,000 a copy. Much too expensive for a production option considering a decent new car cost about $3,000-4,000. It was largely for monetary reason that today we have 426 Street HEMIs and we don't have 427 Street SOHCs. I wish it had played out differently.
Bought a 69 Superbee Hemi in 69. Got drafted 3 days later and sold it while in basic training. I had big plans for it. Headers, gears, better tires. It ran Pure Stock 13.70's at Milan Dragway the day before I reported for duty. It ran good - yes. I did get beat by a 427 impala with gears, headers and better tires. The one thing I think Chrysler could have done better was compression. 10.25:1. All the other Mfg were running 11:1 compression. Imagine what a difference that would have made
I'm a Chevy guy whom has never losta race to a Hemi. Having said that Ford's late 1960's Winston Cup engine would flow more air. Just ask Ricard or David.
Chrysler seems to always be doing ridiculous things. V10 Viper and Viper truck. Cummins engine pickup trucks. The new hemi supercharged charger and challenger. Putting the Hellcat engine in all sorts of vehicles. The 1,000 HP car… crazy stuff when others put a 454 in a pickup truck that won’t pull a sick whore off a commode seat.
The mopar ok. NHRA outlawed the push button transmission and NASCAR seemed to all but completely ban mopar. Why? Because other lost to them. The 426 Hemi, the 440 and 383 engines all seem to get meaner when they need to. the brat pack and the rapid transit system could not be touched except by the feds and insurance companies. And of course the gas problem in the mid '70's.
The piston top area is high for more exposure to downforce on ignition. The central ignition area envelopes around and down towards the circumference and into the ringlands for a seal. Imo. And the cross flow and valve window exposure are two benefits. Simple , reliable in bock cam design made it less costly than the Cammer and other variants.
There were at least three different 427 motors. Which one are you referring to? The standard FE was not a particularly good engine. It was on the heavy side. It would rev high and live though.
The top end pull of a proper built HEMI is absolutely second to none. It seems to never want to end. It’s almost indescribable. It truly is a different feeling and sound than anything else.
The hemi was not new,, just a derivation of the various hemis from the 50s. 392s were the engines for fuel until the late 60s. The 'big' racer such as Garlits had 426s earlier than most others. Initially it was slower. Chrysler dropped the hemi in late 50s because it was too expensive to produce, the advantage were not enough. As a street engine many will say a 440 is better. Defenitly cheaper but not better. But hemis are also HEAVY whichever version. The design though is what is drag racing staple,, NHRA actually mandate it now so nothing else gets a look in
