29 Reasons LS is Better than Small Block Chevy (Gen 1 & 2 vs Gen 3 & 4)
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Published 2020-07-01
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Check out the poster preview video here: Ā Ā Ā ā¢Ā PosterĀ --Ā LSĀ EngineĀ HistoryĀ PosterĀ No...Ā Ā
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LS Sensors:
Air Temperature Sensor: determine the temperature of the air entering the engine to determine fuel and spark calibrations.
Mass Airflow Sensor (MAF): measure weight (or mass) of air that enters the engine to control fuel delivery
Manifold Absolute Pressure Sensor (MAP): fuel delivery and ignition timing.
Knock Sensor: reduce ignition timing if detonation occurs.
Oxygen Sensor: O2 sensor measures air/fuel ratio. Target air/fuel ratio for engines burning pump gas is 14.7 parts air to 1 part fuel. This is where the engine burns fuel most cleanly while generating low emissions. But also just helps the engine run better.
Camshaft Position Sensor and Crankshaft Position Sensor: Indicates stroke position for any cylinder. The latter tells the plugs when to fire.
Variable Valve Timing (VVT): www.superchevy.com/how-to/engines-drivetrain/1808-ā¦
LS is worth 100 horsepower: www.hotrod.com/articles/hrdp-1103-small-block-or-lā¦
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0:00 1) Block Weight
0:50 2) Block Strength
1:17 3) Skirted Block
1:39 4) Main Bearing Caps
1:59 5) Valley Plate Cover
2:14 6) Crankshaft
3:31 7) Oil Pan
2:54 8) Pistons
3:25 9) Piston Rings
3:50 10) Rods
4:18 11) Cylinder Heads
4:58 11) Cylinder Head Weight
5:11 12) Intake Manifold
5:35 13) Camshaft Design
6:07 14) Roller Lifters
6:19 15) Rocker Arm Ratio
6:47 16) Rocker Cradle
7:07 17) Beehive Springs
7:36 18) Cam Replacement
7:50 19) Exhaust Manifolds
8:27 20) Gaskets
8:44 21) Maximum RPM (Redline)
9:00 22) Serpentine Belt
9:36 23) Electronic Fuel Injection
9:55 24) Sensors
10:12 25) Coil on Plug
11:10 26) Engine Control Module (ECU)
11:38 27) Variable Valve Timing (VVT)
12:45 28) Horsepower
13:04 29) Availabili
All Comments (21)
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See but now that everyone is switching to Ls engines I can get Chevy 350s for even cheaper than they already were
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The amount of comments supporting the small block, fantastic the world needs more violent small blocks
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There have been thousands, if not millions of sbc's built with over 550 hp, and still running. The small block can't be to bad as it took GM over 50 years to come up with something better. The small block was, is, and will always be a great engine especially for a design that was made back in 1955.
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To keep it simple the LS is literally just a next gen updated SBC.
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i will keep my sbc, no plastic or electronic garbage on mine.
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Dedicated cylinder head video? YES
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This just in: newer technology makes things smaller, lighter, and better.
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I think his hp ratings on older SB parts is š©š©.. Most of us know better.
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The main reason I prefer an old carbed SBC or BBC over an LS (and I have both) is because I dont have to go visit a tuner with a dyno to make adjustments every time you change something. Carbs are just mechanically simpler and if you know how they work a lot less troubles.
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Well one of the most rewarding things about building an engine is researching and picking your own parts putting your signature on it so to speak see if you can build a better mousetrap.š
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IMO I think the old sbc sounds better specially when it's built, they just sound nastier.
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I'm making 600hp on a 1997 1 piece rear main crank. And it's loving it. The LS is undoubtedly better. But the gap is much smaller than this video makes it sound. As of today, an LS powered stickshift drag car has yet to beat the fastest small block car.
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As I recall as a GM engine engineer working on both small block and, at the time, the new '97 Corvette LS engine, there was only one part that was common to both variants. Believe it or not, that one part was the connecting rod bearing ! The LS was a totally new engine at the time.
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Great stuff and thanks for your hard work! Us older dudes (I'm 52) used to know all this about car/bike engines back in the day but it is tough to keep up. One thing I noticed about the LS vs Smalblock when the LS1 came out was the area under the curve. The LS was making 50/50 more than a small block from 2500rpm on up. Even the older mod Fords didn't have the LS power curve till more recently. (and I love those 99 to 04 supercharged 5.4's too) Yes, if it were not for the small block to pave the way there would be no LS. We had plenty of great times with smallblocks.
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It's funny how the sbc can only handle 550hp on newer once but yet people push it further than that even on older block for racing
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While I understand he's talking about stock set ups, it does depend on how you build your engine
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Best old school motor I had was a straight six in both a Jeep and another in a Bronco. Talk about good performance, easy to work on, inexpensive parts. The only thing about "newer" stuff is that it is more complicated, especially with electronics, computers, etc. I'll stay with the old for now. I love the smell of gasoline and rubber.
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I'm an old guy, and love the sbc, but it compars to the ls like a flathead compars to the sbc. They are all great, in their own way.
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Great technical information. Very informative and entertaining. As long as you're making technical videos, it really stands out when you claim at 3:00 in that pistons are made with silicone. That's an RTV caulk that you seal your bathtub with. The pistons correctly contain silicon. It's an element on the periodic table that is used as a semi conductor material in the ECM and also an alloy component in the pistons. Keep making great videos.
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Ls are obviously great motors. Sbc "built right" are also great motors. Room for both....Just my two cents.šŗšøš¤
