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Old 07-08-2018, 10:46 PM   #1
Ghostdrifter
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VQ or LS1 Swap?

Iím trying to decide if I want to swap an LS1 or a VQ35de in my S14. Iím ok with the horsepower of a VQ with bolt ons. Iím just worried about the turn in would be affected with the VQ as opposed to the LS1. I already have both engines. Iím also concerned with the difficulty of the swaps. Has anyone ever done both swaps or driven 240s with both engines in them?
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Old 07-08-2018, 11:22 PM   #2
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Most will say no but for my 2 cents...LS. There are plenty of builds on here to reference.
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Old 07-09-2018, 01:59 AM   #3
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ls is a tried and true swap, thanks to gm putting them in everything under the sun parts are cheap for the most part. wiring is stupid simple and almost every major city has a couple craigslist dudes that do simple 3 wire harness conversions if you dont want to mess with wiring. Also down the road if you want to add more power you cant beat a ls motor in that department.

I'd only do vq if I had one laying around and didnt have the means to get a ls.
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Old 07-09-2018, 05:50 AM   #4
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If my goal was merely 400bhp I would use an sr20 or something around 3L or less.

thats like 350rwhp which even a stock SR could do.

Alot of people swap LS or whatever but leave it N/A and make 350-400 something. It just seems a waste of time for all that work to get sr20 power back.

I suggest either LS + turbo because [email protected]*(&# 400hp
or 2jz-gte + turbo
or sr20det + turbo

Just don't forget a towel. I mean turbo
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Old 07-09-2018, 07:25 AM   #5
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Lol... VQ35DE vs ANY LSx?!?! LOLOLOLOLOLOLOL

The only VQ worth a damn is the VQ30DET, IMO.
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Old 07-09-2018, 10:42 AM   #6
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Vq platform is awesome, don’t let the hate get mixed up with the facts.
If you go LS go for a REAL LS, aluminum block.
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Old 07-09-2018, 11:06 AM   #7
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Please stick to the manufacturer, or at least the country of origin. Too many s-chassis have been bastardized already.
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Old 07-09-2018, 11:22 AM   #8
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Vq platform is awesome, don’t let the hate get mixed up with the facts.
If you go LS go for a REAL LS, aluminum block.
Iron block truck motors may not be REAL LS's, but they are better for turbo setups. And if you follow the advice from above, WhY dO nA LS sWaP fOr sr20 PoWeR?... If you want "bigger" numbers, the REAL LS is not necessarily the best option.

You can't beat the price and reliability of a $400 truck motor when doing a chevy v8 swap. (Notice I didn't say LS swap)
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Old 07-09-2018, 12:26 PM   #9
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That’s the correct mindset, I hate getting into arguments with peasants about their truck motor not being a “LS”.
Doesn’t make it a bad motor.
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Old 07-09-2018, 01:03 PM   #10
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Vq.

Sounds better
Still Nissan
A lot more exciting then just another ls swap(which is more of a groan then even excitement)
Good power potential
Install parts and modifications already documented
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Old 07-09-2018, 01:34 PM   #11
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VQ30DET... Be the hero Zilvia needs...
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Old 07-09-2018, 06:32 PM   #12
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I’m really just trying to figure out how the extra weight of the LS1 affects the turn in and transient response of the front end of the car. I don’t have a vq30det, SR, 2JZ,or truck motor. I don’t care about being original. I really don’t care about mixing engines and chassis’. I need some insight on the “feel” of both cars from some one who’s driven both.
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Old 07-09-2018, 06:38 PM   #13
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Vq is lighter than KA
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Old 07-09-2018, 06:54 PM   #14
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LS aluminum block should weigh less than the KA as well. I think where you get back over weight is the trans you choose. In his case a T56, the combo weighs more than the KA/5SPD.
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Old 07-09-2018, 07:18 PM   #15
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It does, I’m not too familiar with compatible trans (ls).
There’s prolly a cd009 conversion out there.
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Old 07-09-2018, 09:39 PM   #16
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VQ or LS. Jeezus
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Old 07-09-2018, 09:53 PM   #17
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VQ or LS. Jeezus
Whoa buddy relax, you asked the question. As vague as it was, you are simply asking strangers on the internet to help you decide what motor to run. How about explaining goals of the car?
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Old 07-09-2018, 09:56 PM   #18
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somebody post the thread where the guy weighs the car before and after and its more balanced with the LS in it.

edit: found
https://ls1tech.com/forums/conversio...ce-inside.html
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Old 07-10-2018, 06:52 AM   #19
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OP doesn't seem to want facts, but someone's ~feeling~ on how the different setups drive, which is going to be subjective...
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Old 07-10-2018, 08:40 AM   #20
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As much as I looooooooooooooove the VQ sound, and the fact it's a shorter length block due to having less cylinders, which means it's more centrally placed in the engine bay, and helps with overall balance. . . the overall cost is crazy. Cost alone is what prevented me from going VQ. The cost of the swap, the cost of the swap components, cost of the ECU anti-theft and tuning were sky high compared to the LS option.

LS is soooooooo cheap, and even if you blow it up you can replace it 2 or 3 times before you even come close to what the VQ swap would cost.

If you're just aiming for 400-500 hp, a simple cam swap is all you'll need
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Old 07-10-2018, 11:51 AM   #21
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What are you using this car for?

VQ sounds so awesome ON PAPER. But once you start actually comparing the costs of swapping one vs an LSx, you quickly see why VQ swaps aren't as popular. By the time you finish swapping a VQde into your S-Chassis, you could have probably just bought a HR 350z or maybe even a 370Z for about the same money.

Once you add that fact that VQde's are complete dogs when it comes to making more power, it really seems obvious to me.
But I do actually like the VQ in it's native chassis. It's a total workhouse, kinda like the KA.

If you are concerned about the weight distribution of an LSx with T56 in an S-Chassis...
http://www.youtube.com/watch?v=bL4kIk8mXSk
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Old 07-10-2018, 02:07 PM   #22
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No, no to the V6 of any manufacturer. Unless an extraordinary circumstance occurs a V6 is a terrible idea for a large, overwhelming number of reasons I will summarize with one sentence

"You get all of the hassles of a V-configuration, without the two extra cylinders"

Its never a choice between something and a V6. You are either straight 4, 6, or V8, V10, V12, etc

I would even say 2jz over LS if you can afford the engines and have a light vehicle.

No question that working with only one side of plumbing is 100% easier and simplified, and that 4-valve cylinder overhead cam heads are far superior, with hemispherical combustion chambers and optimal plug placement, main girdle support, piston oil squirters, I mean come on its just too good
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Old 07-11-2018, 07:56 AM   #23
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^^^FRFR. Inline engines FTW. So much easier to work on and less parts to buy. I hate the idea of having to buy 2 exhaust manifolds or headers or 4 cams for a dohc v6. At least the LSx only has 1 cam to upgrade. All the upgraded head options on the LS help it's appeal too. Plus, damn, just look at the LSx's intake manifold. Then look at the VQ35DE's. That shit so ugly. And so are the aftermarket units.

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somebody post the thread where the guy weighs the car before and after and its more balanced with the LS in it.

edit: found
https://ls1tech.com/forums/conversio...ce-inside.html
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Old 07-11-2018, 09:26 AM   #24
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Although LS have their own share of serious flaws, like dying from valvetrain failure when fitted with a cam without serious work on rockers, pushrods, springs and so on, or when revved slightly too often near the rev limiter even stock, or not being able to take some Gs without oiling problems, i would not bother swapping a VQ. There really is no point. A VQ will do around 300hp tops A CA or SR will do the same, stock. The gearbox will be at its limits, true, but then you can put a VQ gearbox in it. Heck, for the price of a VQ swap you can put a sequential dog box instead.
VQ rods are weak so you cannot turbo them without building them. It makes no sense to use one, unless some rule states you can change the engine but only take another one from the same manufacturer. That and they take up quite a lot of room being DOHC.

Want turbo LS ? go cast iron truck block. Want NA power ? well ... aluminium blocks have become expensive and cannot be rebored, so you might regret that weight saving aluminium thing the instant you drop a valve (because it will happen, unless you source an LT from a C7 corvette. Even then ...), but either are valid choices.
With a nicely built valvetrain, a cam, an LS Next block from dart and dry sumping they will reliably make a ton of power.
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Old 07-11-2018, 10:36 AM   #25
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ls swap won't have you kicking yourself in the ass years from now. oem support for the vq won't last forever. other than that vq sounds awesome and has a great powerband for an s chassis that you can keep the pedal mashed down on. ls means you will be doing fine inputs on the throttle 99% of the time.

if i had lots of money to blow i'd love a vq35hr/37vhr swapped s chassis with just some longtubes and exhaust. good for a dd and you can wind it out on a track.
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Old 07-11-2018, 10:50 AM   #26
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if i had lots of money to blow i'd love a vq35hr/37vhr swapped s chassis with just some longtubes and exhaust. good for a dd and you can wind it out on a track.
FRFR, just get a Z33/34. Early Z34's are like $10k now and vastly superior to the vast majority of S-Chassis. Gut it if you're serious about track times.
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Old 07-11-2018, 11:34 AM   #27
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As much as I looooooooooooooove the VQ sound, and the fact it's a shorter length block due to having less cylinders, which means it's more centrally placed in the engine bay, and helps with overall balance. . . the overall cost is crazy. Cost alone is what prevented me from going VQ. The cost of the swap, the cost of the swap components, cost of the ECU anti-theft and tuning were sky high compared to the LS option.

LS is soooooooo cheap, and even if you blow it up you can replace it 2 or 3 times before you even come close to what the VQ swap would cost.

If you're just aiming for 400-500 hp, a simple cam swap is all you'll need
I've ridden in this guys car and it makes me regret the fully built SR I have. If I had it to do all over again I would go V8.
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Old 07-11-2018, 12:40 PM   #28
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VQ's have weak rods and known to bend when boosted or even a little juice. They have good torque out of the box but not as good as an LS. I vote jz
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Old 07-11-2018, 01:24 PM   #29
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OR get a corvette for cheaper and have something you wouldnt mind to daily and drift all the time plus you can save the S chassis for the rest of us who like to keep it japan
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Old 07-11-2018, 02:04 PM   #30
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allow me to clear up some,

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Although LS have their own share of serious flaws, like dying from valvetrain failure when fitted with a cam without serious work on rockers, pushrods, springs and so on,
Actually. And I am not just saying this. The factory rockers are amazing from 2001+ and everybody uses them, reliable even at 1k rwhp with stock pushrods and heads.

The trick like most engines is using low lift and gentle ramps.


Quote:
or when revved slightly too often near the rev limiter even stock, or not being able to take some Gs without oiling problems
Be reasonable with RPM. 6000rpm is practical for almost any 02+. I might take a 4.8L which is a de-stroked 5.3L to 7k frequently.

The G's without oil problems is in the oil pan. So many simply fill extra 2qts of oil when drag racing. others and especially in swaps use a custom oil pan, the sikky unit for example has a trap which only allows oil back to the center pickup and not back out to the edges of the pan.

Quote:

Want turbo LS ? go cast iron truck block.
Actually the fastest turbo cars use the Aluminum L33 engine more than anything else. It holds the record I am told
http://www.norotors.com/index.php?topic=25975.0


Finally, Here we go: 6L, stock bottom end with a cam and springs. Factory rockers, pushrods, lifters, pistons, crank, rods, balancer, oil pump, head gaskets, coils, bearings have 200k or 250,000 miles I forget which.
1000rwhp dynojet from that ^^
https://www.youtube.com/watch?v=ckALwOQKE2M&fs=1" width="644" height="390">https://www.youtube.com/watch?v=ckALwOQKE2M&fs=1" />https://www.youtube.com/watch?v=ckALwOQKE2M">http://www.youtube.com/watch?v=https://www.youtube.com/watch?v=ckALwOQKE2M
https://www.youtube.com/watch?v=ckALwOQKE2M
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