Insane SBF Cylinder Head? Race Flow Development SC2 

You forgot gm and Mopar stole design for intake and cylinder head from Ford.

Looks nothing like an inline ls head

Canted Valves Way back in the 1960s when GM engineers began designing the “Mystery” big-block 427 that would eventually evolve into the Mark IV 396/427/454, cylinder head port designers realized that if they tipped or canted the valves at an angle from off-center, the intake flow improved. This created the canted valve head design that made the big-block Chevy famous. This is also the concept that Ford engineers integrated into the Cleveland head design that became famous (or infamous) with the Boss 302 head. The Cleveland and Boss 302 engines may be considered infamous because of their huge port cross-sectional areas. But the concept of the canted valve has not been lost on cylinder head designers. The idea is to cant or tip the valve toward the center of the cylinder bore, which means the valve moves away from the cylinder wall as it opens, unshrouding the air path to move more efficiently around the valve. This not only creates a more efficient air path, but it also allows the engine builder to use a larger intake valve within the same bore size.

@@acostaxbmc9580 ​ that’s incorrect. The correct reasoning behind the improvement in flow and power is due to the increased surface turbulence due to uneven surface area. This creates a greater amount of laminar volume per surface area than with orthogonal geometry of valve position.

@@acostaxbmc9580 well stated

7721

@@johnchopp3278 yes sir!!!

I've seen A 351ford make Great-Power With a modified LS Chevy Head on it....

Is this head able to bolt to a Ford 351

yes

💯

That's all it is ford figure it out 50 years ago

Chevroleg's has been playing Ketchup for 100 years

If you got any laying around, i like 2!

@@anomilumiimulimona2924 I got about 4 or five sets of cleveland heads laying about. And you can buy a brand new cast iron heads for like $1200 a set or $3000 a set for new aluminum.

didnt you hear it is a ls head. lol

Higgins racing has CHI cast their race heads. They flow 16% more than the heads CHI sells. They are MONSTERS!

Hell yes. Love to lay hands on a couple sets of those

that drives LS guys crazy, but its true👍

Couldn't have said it better. And don't LS heads bolt up to a sbf block? I do think the LS engines are great

Absolutely. Same design as BBF also.

The Cleveland head is a rip off of a big block Chevy

@@xozindustries7451 🤣🤣🤣🤣🤣🤣🤣🤣 The world may never know . BG does though.

Wish I had the $6500 to move on those bad boys. As a kid I knew Yates was the jam. Maybe some day.

But they are a pain in the ass sometimes!

It is crazy the stuff they are doing! These heads are crazy!

@@TurboJohnRacing Yeah it is crazy. Glad to see you guys using them, your gonna be very pleased.

What is the prices

Can you run this head with nitrous

Secret? Curtis is well known.

those heads will also fit a LS too😝😝

Guys run them in X275, they work.

For real its like they took a ford windsor and a cleveland head and made a baby. Lol

LS chevy kicking ass on ford from 1997 all the way to 2011 until a naturally aspirated ford V8 surpassed the 345 horsepower that's 15 years ford played catch up l believe in 1997 the 4.6 ford made 260 horsepower that's 85 horsepower short of 345

And the ford 351 had 6 bolt mains to like the LS definitely a direct copy

@@gloriamaletta8667 no the heads, not the block. Fact a LS head can pretty much bolt to a SBF/Cleveland block and vice-versa.

@@gloriamaletta8667 near every aftermarket pro stock head from 80s to early 2000s used the cleveland style ports. And again LS record on the track doesn't even compare to a cleveland.

I would like to see head to head comparison on some dyno numbers between the MBEs and these.

LSR has canted and rotated valves?

Yep the ls engine was built off the 351 cleveland engine hence the firing order

I appreciate it

What

Haha i saw that, was going to do it myself but the $1k+ camshaft and custom intake ruined the idea since i can buy off the shelf heads that flow as good and bolt them on at that point of expense and time

I like mine... Can't wait to see CASPER making some passes

@@UnityMotorSportsGarage Yo Andy! Go ahead and tell 'em!

Aaaarrrrgh. A SBC Chev head is a SBC Chev head. The LS Head is a LS head. Nothing like any Ford head. The canted valve Clevo and BBF is a similar design to BBC head. And the Chev came first!! And nothing else to my knowlege. BBC has the capacity to use the design. Clevos and Boss 302 as a standard engine are probably hurt by the head style. In my applications of road racing and speedway @ 7000 rpm the 4V Fords are simply door stops! No velocity, the 2V is okay but there is a LOT better around in the aftermarket.

Stop. Ford guys wish LS heads would work on thier blocks.

@@baby-sharkgto4902 Now thats what I like to hear

@@baby-sharkgto4902 they will fit with a little money. But it's pointless with all the good heads ford offers.

@@ldnwholesale8552 factory LS heads are almost identical to the Ford Windsor head. and the Windsor head came out long before the LS. The canted valve head came out in the mid 50s, on International engines, look it up. Chrysler got their Polyspherical head design from those, also started in the 50s. BBC heads copied the GM 348/409 "W" head, in mid 60s. Chrysler had already went to the Hemi by then.

That he did!

Higgins. Scm. Chi. Afd

Not sure

A guy with deep pockets!!😂

So would the heads Randy is getting be considered more of a Cleveland style head due to the canted valves? If so would this make his engine a Clevor?

The first hemi head wasn't either of those, it was actually Fiat believe it or not, in the 20s

@@elmerfudpucker3204 easy to believe , everything comes from Europe.