I love that look on the Drag Boss's face when he says the Cleveland does it all better.

Could listen to the guru all day long!!

So SO good. Darin is one of those people you know will have incredible insights in any conversation around his passion. And in a completely digestible way of conveying complex and never talked about areas/subjects. Gold

Tim - The Coyote type heads. Terminology (Polyquad) Meaning Two different sized intake and exhaust valves. Creating more swirl:) Four valve heads typically tumble the air into the cylinder. So you have two different sized intake and exhaust valve to promote and create swirl. Swirl is where you get your low end torque. So with a four valve head you get (Twirl) Polyquad design modifications. David Vizard Channel - Polyquad Heads

The information available on your channel is plentiful.

if you ever want to learn anything about how to make power just put on drag boss garage the best thing on KZfaq always the best stuff tim and the best people and that's the truth

Tim Halstead. This was an awesome video. I learned some stuff.

Darin is a cylinder head and intake guru one of my absolute favorite videos so much info I had never heard kinda blows me away I watch and pay attention to this stuff and he said things I had never heard awesome. Keep it up you are killing it dude.

Dang, this is some of the most interesting stuff I've ever heard.

Sorry to interrupt, men. Just watched the show from 2/18/23 and , me was very impressed, for the little that is worth. However, DragBoss, you have made the Clevland come to controlled flame front life and Thankyou . Cheers. As have all the new heads that have been cast. Why, canted is best and hence, 335' s rule!

Another great informational video Tim!

Darin does a fine job explaining why the Ford Cleveland-style canted valve arrangement is the standard by which every domestic center cam pushrod engine on gasoline must be judged. No brag. Just fact. SWEET!

Hey Tim, I think it’s time for another Darren Morgan episode

I always appreciate your videos, these technical discussions are very useful..thank you very much..i watched the videos more than once to be sure to get all of this information

So the NHRA knew the rules change would make the class a GM only deal. Shocking.

kaase and Ardeama and Braun do some interesting stuff with the valve positioning on Kaasesengine masters y block and Aerdema and Brauns model A motor

It is going to be talked about now and I am looking forward to seeing and hearing/everything about it.

Twirl = A mixture of tumble and swirl

There's a reason the Cleveland was the most handicapped engine in PS..... Canted valves, baby!!

Allways impressed with Darin's theory on valve rotation. I have not heard him refer to this as a "stagger valve" configuration which surprises me. The Yates head was a stagger valve configuration and yet the valves were not canted. I'd love to hear Darin speak to a relationship between valve angle and intake roof height. Also intake port stall condition on the bench. Keep it coming Tim !

Darin, has those fingers in invisible valve guides .

Thanks to Richard Keinath for putting the canted valve cylinder head to the forefront of performance!

Talk about Volumetric efficiency and thermal efficiency and calculating

Unfortunately not every engine hS the benefit of canted valve heads. No doubt they are better. Just moving the valves in a wedge head is beneficial. Great video

Where is there a link to his channel? Great content from you both.

Very good video thank you for sharing. Just looking at the idea of valve rotation it makes it seem like a Harley motorcycle engine would be sort of the worst combination. An engine that doesn't like a lot of RPM with a cylinder head that's very heavily rotated. Would it have been much better served with more of a canted valve layout?

I can’t figure out why they built a strong but relatively light design like the FE that can go to 496 ci engine without doing a Cleveland style head for them. I wish they just could have done a 4.63 bore center Cleveland style head. There are good wedge heads they make, I used to ask this on the FE Forums and I would get ripped to pieces. I even helped with a good wedge head one of the best FE heads that were released. Got the chambers to rotate and generate great velocity ( anomously) but I had moved the intake closer to where the SSR was and moved it toward the entrance and had to use a longer rocker on the exhaust and my foundry backed out, and it was basically borrowed and made into a Chinese knockoff of a crummy wedge. I want a Cleveland or a Mixed up Boss like Andy’s. A 4.63 bore spacing for a 4.125 x4.125 441 ci Cleveland/FE. Any ideas? A 420 cfm intake and a 280 cfm exhaust? C’mon

The LS design seems to contadict this concept.

It would be a straighter shot at the valve through the manifold wouldn't it

I heard the guest say ... When the rpms dropped from 10.5k to 9600 the horsepower increased. Didn't he mean torque ?