Small Block and Big Block Engines Explained | Tech Talk

Do you know the difference between a small and big block engine? Watch the video to find out what it is, why it matters, and how to know which one you need!

#SmallBlock #BigBlock #CarEngine #CarExpert

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[torreerrot]

Truly appreciate that you guys took the time to explain the difference. Now I know a little bit more about small and big blocks. You learn something new every day!

[EamonnSeoigh]

Just in case anyones forgotten their circle formulas, the .7854 constant used is Pi/4, because when manipulating the circle formulas in engine building we are using a diameter, which is our bore dimension, and that feeds the area of the surface of the piston into the calculation. That constant is easy to remember- it's the 4 numbers at the top left hand corner of a calculator keypad.

[richardbaraniuk]

Back in the day I built 350 small blocks for my 71 Camaro. Your videos I can now have my grandchildren watch as they are so well explained. I could never explain the difference like you did in this video!

[Bigheader]

Great video man, really appreciate the detail you go into!

[lemonke]

Absolutely love these kinds of videos!

[joshtheking]

Thats a really good video. You did a good job explaining it. Thank you.

[Formula-Brave]

Fantastic video 🎉Thank you!!! Do you have a video explaining a street drag car transmission?

[eddonovan]

Could you do something on the 351 Cleveland similar to this video?

[danielwilson]

Bill, your description of the differences between Fords small and large displacement engines is right on the money as usual. They are clearly two entirely different engine types with no parts interchangeability between the two and both offer huge power increases with the proper modifications.

But I would like to get your opinion about the two small displacement engines that share the same basic dimensions as all Ford “small blocks” with pushrod actuated valve trains but virtually no production parts interchange between the two engines.

The 351 Cleveland is often described as a big block engine but it has the exact same cylinder bore centerline spacing and head bolt pattern as the traditional 351 Windsor small block engine.

The canted valve Cleveland heads have the capacity to support much more horsepower than the limited flow of in-line valve Windsor heads. They are a direct bolt-on for Windsor blocks with only a minor modification needed for the coolant passage and the combination is appropriately named the “Clevor” engine.

The powerful Clevor has become so popular that aftermarket companies are now offering alloy Cleveland head and intake packages specific to the Windsor block.

But the debate about Clevelands being a big block, small block or even a mid-block continues. I gladly welcome all opinions 🤔.

[ForcedFoxbody]

If be curious what the overall cost comparison by going big block vs Small block vs coyote. Especially with a dart block sbf to get it into the same power figures. Really enjoyed this video

[EGLyrical]

Damn I’m confused fr I love going fast tho had a 351 Cleveland growing up in a Torino

[MrSpeakerboxx]

That's was a really good explanation

[RepoDraghon]

I wanna know why my heads keep failing on my 1st Gen Coyote (2014) in my Mustang... I had a Reman put in and the heads failed on that one too... And what can I do to prevent it in the future?

[johnjacobjinglehimerschmid]

Early information on stroker motor confuses me. If you could change the stroke from 3 to 3.4 inches why does the bore have to change?

Or if you change the bore why does the stroke need to change?

[PeNeTrAtOrX]

Displacement in cubic inches... what a crazy thing dude XD

[djwarren]

Bill would make an excellent school teacher.

[comet]

Personally I am 100% torque .. big cubes, heavy rotating assembly, and a monster clutch .. WHOOP!

[twalatka]

Where does the constant .7854 come from?

[harrymakongwa]

Bigger block, big crash shaft more power, can handle more boost

[LegacyIvyTerascale]

that sounds subjective AND relative
the 429 is small compared to a the engine of a semi-truck
the 302 is big compared to a VTEC or a 2JZ