Are big blocks superior to LS? I know big blocks are superior

>>15544197
bump

Depends. Obviously with more cubes comes the ability to make power easier. I'm a fan of both.

Also, the big blocks also have the advantage of canted valves.

>LS > Big Block
Mainly because of packaging and they are so common these days.

I bet she'd prefer the BBC

Stroked boosted sbc?

>>15544367
Sophie Dee can't get enough BBC.

I think big blocks are superior for total power. The ls will have a lot more weight and packaging benefits. Big block for drag, ls for road racing

I think the real difference is aluminum vs iron. Iron big blocks can withstand a lot more punishment. On paper they would producebigger hp and torque numbers. But the ls is better for a track application

Iron block ls > all

>>15544197
I think it's neat how as the CU increases, the redline decreases.
Anyway
BBC>LS just for that sound.

A 409 with twin Quadrajets is something everyone should experience in their lifetime.

>ecoboost > big block > small block

>>15544596 ^
>ecoboost<big block>small block
>....................V

>>15544596
>>15544605
Big block > all

>>15544197
>Are big blocks superior to LS?
In a straight line, yes.
In something with corners, no.

BBC's make more power, but nothing beats that light, cheap, all aluminium LS.
>I know big blocks are superior to SBC inch for inch because of how massive the heads are, but what about LS?
No. inch per inch, smaller motors outperform bigger ones - or you didn't build them equally in terms of budget and parts.
>I heard that LS engines are more similar to BBC in how much they flow but I also heard that even the biggest LS7 heads arent as big as the biggest BBC heads.
BBC heads will always flow more thanks to their bigger bore and valve sizes. However, a modern small block like the LS can still flow crazy amounts of air.

All in all, I'd consider the LS to be the better package, and the BBC to be the better dragstrip engine.

>>15544660
only if your primary need is for a boat anchor

>>15544448
>>15544500
>Let iron block meme
Show me a single aluminium LS BLOCK that failed under boost. None of them do. You're confusing the block material with bottom end(crank, rods, pistons) strength. Sure, a 4.8 and 5.3 can take beating - but that's because of their rotating assembly, not because of their block material. You could still stuff 20+ PSI into an aluminium 5.3 (which is the hipster of LS designs) as long as you gap the rings to ~35 thou.

>>15544675
Iron is stronger than aluminum. This is a fact. Engine blocks not cracking is just because builders know the engine's limits.

>>15544669
>Boat anchor meme
Sure, it's a little pigfat..


.. okay it's really pigfat, but with that comes the benefit of more cubic inches, more cubes equals more power, and a generally better powerband. Of course that's still debateable, but there really isn't a replacement for displacement.

>>15544707
>okay it's really pigfat
They only weight 600 pounds or more than a modern motorcycle..

>>15544717
Compared to something like the LS I mean.

>>15544705
>Iron is stronger than aluminum.
No it isn't. It's actually lighter for the same strength, or stronger for the same weight. Why do you think Top Fuel blocks use aluminium? Because an iron block capable of taking 10000+ HP and 60+PSI worth of Roots blown "FUCK YOU, DRIVETRAIN COMPONENTS" would be impossibly huge.

>>15544732
Because those engines last one run before needing a rebuild.

>>15544795
The block isn't discarded though.

>>15544675
the problems with the aluminum blocks is that the block shifts at higher hp and rpm causing the main caps to deform and cylinders to deform resulting in clearances being wrong and parts getting spun/destroyed.

And yes alum blocks do crack, this is very common especially around the bores.

>>15544197
big blocks are great, they have an awesome aftermarket and you can damn near fully build a big block chevy and go forged for the same price as just buying a complete 5.3 engine and trans with wiring harness and ecm ready to drop in.

However the technology in the ls series of engines are far beyond what i would call archaic architecture of the BBC. Reusable gaskets on every part of the motor, good head gaskets, stout bottom ends stock with six bolt mains, better camshaft clearance and oiling, better oil pumps the list goes on. all in all the ls is a much better more refined engine. The bbc is a great engine as well, and can make a ton of power but at the disavantage of being a caveman in technology and design.

>>15544197
>BBC
Posting in a stealth cuck thread

>>15544863
Big blawks are pretty tough by design too desu,

>>15544863

Isn't the ls known for having terrible oiling characteristics even when dry-sumped, unless your willing to go to an aftermarket block?

>>15544675
Isn't the block failing the sole reason GM didn't make the LS9 from an LS7 block but instead from an LS3?
Though I've personally never heard of a boosted LS7 failing.

>>15544981
>I heard that LS engines are more similar to BBC in how much they flow but I also heard that even the biggest LS7 heads arent as big as the biggest BBC heads.
I am kicking myself I didn't notice this.
>>15544197
10/10 OP.

>>15544666
>I know big blocks are superior to SBC inch for inch because of how massive the heads are, but what about LS?
No. inch per inch, smaller motors outperform bigger ones - or you didn't build them equally in terms of budget and parts.

Uh what?

>>15545683
In general smaller motors outperform larger ones inch for inch, but in this occasion OP's "big black cock" analogy kinda runs true. Unless you're talking about a custom aftermarket head, standard Small Block Chev siamese heads suck ass, where as Big Block Chev heads are quite a good design.

File: 97fb12.jpg (16KB, 408x187px) Image search: [Google]

16KB, 408x187px

>iron vs. Al-you-mini-um
So with this back and forth what about the old iron block LT1. I have a handful of guys tellin me "dude its heavy but its worth it brah" then the others of course "ls swap fampai"

File: LS7 block.jpg (138KB, 1024x768px) Image search: [Google]

138KB, 1024x768px

>>15545733
With an aluminum block you're still going to probably be breaking other parts before you make the pistons go, LS7 notwithstanding, being bored as fuck.

Pic related, it's an LS7 block. There are reasons why boosting these is considered foolish.

Still, you should be sure that the rest of your engine is up to power adders before doing anything drastic, especially if you do something like get LS7 heads off of a crashed Z06 or something. Dem faulty valve guides.

>>15545765
I dont plan on boosting it anyway. I want to get as much out of it keeping it N/A. Then we'll see about power adders.

>>15544197
ls is limited by it's small bore
if you want more than 400ci then a big block is better. big bore>fits big valves>more powah

>>15545787
You can't really build an engine for maximum power off N/A and then boost it. Built N/A engines have higher compression ratios which would lead to detonation and pinging if you boosted them.

>>15545801
...thats why i said we'll see. Turbos not the only power adder

>>15544197
>Superior
You don't seem to know what that word means.
Big block isn't better than small block except in the "more displacement" department. More power != better. Would you rather have a 700lb big block up front or a 500lb LS? If you answered "big block" you're probably a drag racer who doesn't give a fuck about handling.

>>15544197
Is that a 60º bank angle or 90º?

>>15544832
Stock rototaing components usually give out way before that happens though.

>>15545615
No, because the LS7 block has siamese bores, which meant the cilinders walls got really thin - which is not good when you add more cilinder pressure.

>>15544197

Big Blocks will always make more power than a Small Block. There is a reason the phrase "No replacement for Displacement" exists. The difference is, a Big Block requires more maintenance, is heavier, and has astonomically more expensive parts.

A well built and tuned 426 Hemi will crush anything in raw power. It'll also never go around Laguna Seca with any sort of special time.

You can build a really incredible track car with a small block, but if you just want to mash the pedal and get down the quarter mile as fast as possible, Big Blocks do it better. You just wind up paying twice as much as the guy with an LS to be a second or two faster.

>>15545901
>A well built and tuned 426 Hemi will crush anything in raw power.

Posting fun videos.

https://www.youtube.com/watch?v=61xAPBv5fS0

>>15545911

I don't come to /o/ for porn, bro. Why you do this?

>>15544732
if you make an al casting in fe it gets a lot stronger

and heavier, like you say. but an iron ls is stronger than an ally one

>>15545911
but the turbo Camaro won

Okay so all these retards turned this into some weight debate or something.

I'm talking inch for inch. I don't care about weight or any of that dumb shut, that seems to be what everyone is jumping at.

Let's start again
Big black cock is superior, right? Just by sheer size of the heads. I don't care about cubic inch discussion or weight discussion I'm talking about inherent design.

BBC is simply superior. Even comparing a 427 SBC, LS 427 (not LS7 or any titanium bullshit)and 427 BBC the BBC should be superior because of the larger heads and shorter stroke.

>>15545886
more like 120°

>>15546089
>I don't care about weight
>I don't care about cubic inch
>I'm talking about inherent design.
You are a retard bro.

>>15546089
>It's superior because of one design cue that is outweighed by severe problems with other aspects of the design
Just remove the steering wheel. You won't be needing it.

>>15546102
You're the fucking retard because you can't read. Aluminum big blocks exist. Iron LS blocks exist. What's your point retard?

>>15546120
>Iron LS blocks exist
Those aren't LS blocks though. LS is always aluminium. You're talking about stuff like the LM&, which may be a GM smallblock, but it's no true LS.

>>15546115
>hurpa durpa duroa durr
You're a fucking idiot. The heads are the most important aspect because they dictate how much air the engine can fucking suck in. You're just a benchracing retard who thinks 100lbs weight difference dictates whether a car is an immaneuverable boat or takumi dorifto race car. Kill yourself.

>>15546138
Are you serious? The whole fucking series is referred to as LS in automotive vernacular you ignorant fucktard. Quit pretending you have any idea what your talking about this is embarrassing.

>>15546089
no the inertia in the bbc setup would be condiderably worse

File: 0315_chris_rock_ex-1[1].jpg (9KB, 225x225px) Image search: [Google]

9KB, 225x225px

>>15546138
>but it's no true LS.
wat

>>15547022
There are no iron blocks with an LS code. Hence, they're not true LS engines. Thrid gen SBC would be the best term.

>>15547033
https://en.wikipedia.org/wiki/LS_based_GM_small-block_engine

retard

>>15547057
>Generation III GM small-block (1997–2007)
>Generation IV GM small-block (2005–2016)
>Generation V GM small-block (2013-present)
That's what they're called: GM smallblocks. Just because the other engines are derived/based off the LS, doesn't mean they're actual LS engines. If the engine code is not LS, it's not ''an LS''. Simple as that. Or do you go around calling LR4's, LM7's and LQ9's ''LS engines''?

>>15547102
>Or do you go around calling LR4's, LM7's and LQ9's ''LS engines''?

Yes. They are built on the LS platform, and thus an LS engine. Are you saying that the L92 isn't an LS?
And yes, they are also Generation 3-5 smallblocks.

>>15547124
>Are you saying that the L92 isn't an LS?
Yes. It's not a complete LS, since it lacks the name, and besides, it doesn't have the output of the LS3 anyways.

Just because Audi/Seat/Skoda built the A1/Ibiza/Fabia on the Polo platform, doesn't mean they're producing Polos. They're their own distinct thing. Platform sharing in the automotive industry is nothing new, as are engine platforms, but they're distinctly different engines.

Also, I've finally thought of an LS that's both a true LS, and an iron block: the LSX. Doesn't completely count though, as it's a crate motor, and it was never offered in production cars.

thicc