Why do people do wild swaps(RB, LS1), when u can just buy a Porsche, Ferrari, etc?

[BadBRZ]

Originally Posted by fooddude

How fast would a Twin be anyways with a stock NA LSx engine? Like 0-60, 1/4mi, top speed, etc? Would it be pretty fast?

And how much faster would it be than cars native to the LSx and come with the LSx from factory? (ie: corvettes, camaros and other factory LSx cars(?) I'm unaware of). I am assuming it would be significantly faster than LSx native cars since the Twin would probably weight 1k lbs less lol.

Would a stock 430hp/tq LSx NA powered Twin be able to beat stock Porsche Turbos, Ferraris, Lambos, McLarens, stock GTRs, LFAs, etc etc?

simple power to weight ratio calculations should give you a very basic idea.

If i went this route i most definitely would not have a stock na LSx swapped in...

[Reaper]

0-60 wouldn't be that good simply because of traction issues. At least not 2.9 seconds like the new porsche 911. But 400+whp and 350+wtq is good for a low 11 sec quarter. So a na lsx with more wtq should be a reliable 10 second car. Traction dependant. A turbo frs on e85 gives stock/bolt on corvettes and gtrs fits in situations where traction isnt as much of an issue. There's a few ls6 miatas on youtube that would give you an idea on what kind of times 450+wtq does in a sub 3, 000pound car.

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[Reaper]

Can you imagine a 1700hp nelson racing twin turbo 572 in there? Whoa.

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[Poodles]

Originally Posted by fooddude

How fast would a Twin be anyways with a stock NA LSx engine? Like 0-60, 1/4mi, top speed, etc? Would it be pretty fast?

And how much faster would it be than cars native to the LSx and come with the LSx from factory? (ie: corvettes, camaros and other factory LSx cars(?) I'm unaware of). I am assuming it would be significantly faster than LSx native cars since the Twin would probably weight 1k lbs less lol.

Would a stock 430hp/tq LSx NA powered Twin be able to beat stock Porsche Turbos, Ferraris, Lambos, McLarens, stock GTRs, LFAs, etc etc?

Gen III/IV motors have a huge range of powers stock (255HP to 638HP) that all depends on bore, stroke, and if it came with a supercharger or not.


Normal LS1 is over 400HP with slight mods (intake, headers, cam, retune) and in a car this light, yes, you'd make a hell of a lot of supercar owners cry.


Also, the LS1 doesn't sound like the old V8's for various reasons. Now if only Lingenfelter had made the flat plane crank conversion available...

[glamcem]

Originally Posted by fooddude

How fast would a Twin be anyways with a stock NA LSx engine? Like 0-60, 1/4mi, top speed, etc? Would it be pretty fast?

And how much faster would it be than cars native to the LSx and come with the LSx from factory? (ie: corvettes, camaros and other factory LSx cars(?) I'm unaware of). I am assuming it would be significantly faster than LSx native cars since the Twin would probably weight 1k lbs less lol.

Would a stock 430hp/tq LSx NA powered Twin be able to beat stock Porsche Turbos, Ferraris, Lambos, McLarens, stock GTRs, LFAs, etc etc?

I think you will have to take a look at those cars as a whole package.. not just weight/hp ratios.. Cars that you mentioned above also come with correct tire and wheel size, gearing, differential, aerodynamics, suspension geometry ..etc to put that power down so 0-60 and 1/4 mile times will depend on them by a large margin.. on highway pulls though the most deterministic factor is the weight/hp ratio ( assuming you have enough traction and gearing)..

What is your main purpose for a bigger hp car? maybe buying a Corvette might be a lot better option for you

[Reaper]

Didnt I just say that?

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[fooddude]

Originally Posted by glamcem

I think you will have to take a look at those cars as a whole package.. not just weight/hp ratios.. Cars that you mentioned above also come with correct tire and wheel size, gearing, differential, aerodynamics, suspension geometry ..etc to put that power down so 0-60 and 1/4 mile times will depend on them by a large margin.. on highway pulls though the most deterministic factor is the weight/hp ratio ( assuming you have enough traction and gearing)..

What is your main purpose for a bigger hp car? maybe buying a Corvette might be a lot better option for you

Yes, I know it depends on many many many other things (even the popular 255 tires on 9" wheels would be way too skinny, no sufficient aero, suspension that was never designed to handle 400+hp, etc, etc) ....hence this thread ...why not just buy a porsche and be done with? ..with ill quality to boot, lol

[Reaper]

Because I can build a pretty cool car in my driveway on jackstands for less than 182, 000 $

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[glamcem]

Originally Posted by fooddude

Yes, I know it depends on many many many other things (even the popular 255 tires on 9" wheels would be way too skinny, no sufficient aero, suspension that was never designed to handle 400+hp, etc, etc) ....hence this thread ...why not just buy a porsche and be done with? ..with ill quality to boot, lol

Because Porsches are expensive to buy and maintain but LS-x series engines are dirt cheap..each car is a compromise IMO, Corvette is the best bargain out there when it comes to pure power and handling abilities but for many people it's still heavy for track use and steering feel in the FRS/BRZ is better..

also the consumables are more expensive for high horsepower heavier cars,

For street Camaro and Corvette are a lot better for the money, a heavily modded FRS and BRZ cost a lot of money and lack the factory warranty and reliability

Originally Posted by Reaper

Because I can build a pretty cool car in my driveway on jackstands for less than 182, 000 $

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FYI, a well maintained C5 Z06 can be owned for low $20ks and can keep up with many cars well over $100k, if that's what you're after (bang for the buck factor)

[andrew20195]

Originally Posted by fooddude

even the popular 255 tires on 9" wheels would be way too skinny

If you don't use the gas pedal as an on/off switch, some decent 255 tires would be more than enough for street use.

[Akari]

Why take the easy way out and buy pre-configured? -Sometimes the difficult path is much more rewarding.

[Malt]

Originally Posted by fooddude

How fast would a Twin be anyways with a stock NA LSx engine? Like 0-60, 1/4mi, top speed, etc? Would it be pretty fast?

And how much faster would it be than cars native to the LSx and come with the LSx from factory? (ie: corvettes, camaros and other factory LSx cars(?) I'm unaware of). I am assuming it would be significantly faster than LSx native cars since the Twin would probably weight 1k lbs less lol.

Would a stock 430hp/tq LSx NA powered Twin be able to beat stock Porsche Turbos, Ferraris, Lambos, McLarens, stock GTRs, LFAs, etc etc?

0-60mph times and to some extent 1/4 mile times are a pretty terrible metric to measure a cars performance unless the only thing you are interested in is stop light or drag racing. Both of those are heavily dependent on what tire you are using and your ability to get off the line quickly, neither of which holds much merit when thinking about a cars ability to track. The trap speed on the 1/4 mile might hold some value in terms of raw acceleration. Top speed is a function of gearing as long as you have enough HP to overcome being drag limited. If you could keep the same trans with an LS in our car the top speed wouldn't change at all.

You can blame the focus on the useless numbers on publications like R&T or Motortrend because people want to see numbers to compare cars. Never mind the fact that those numbers are highly conditional and one could easily pick a different metric to compare and swing the "which car is faster" a different way. Obviously they try to keep things consistent but you never get a real picture of what the car is actually like by simply looking at what some magazine wrote. Take as an example a stock BRZ/FRS, just about every comparison has them getting beat on they typical tests those magazines use, yet every subjective comparison about driving feel or "fun factor" it gets rated over the top. Why is that? Its because you can't boil down a driving experience to raw numbers.

It really depends on several factors when you say something like will it be able to beat XYZ car? Beat it where? At the drag strip? On the track? Fuel Mileage? All of these things are heavily driver dependent so any comparison is pretty much impossible without answering other variables. What type of suspension setup is the BRZ using? Tires? Supporting Mods? Driver Skill? The Stingray Corvette weighs ~3300 lbs which is "only" 500lbs more than a 86 but with a weight distribution much more ideal at almost 50-50 split. Add the tires and additional weight of the LS engine/trans plus wheels and tires to a BRZ and you'll be pretty close in weight.

Building a car to be able to "beat" (insert more expensive car here) usually ends up as a losing proposition since taking the money you spent to make your car faster than XYZ car could have been spent to buy that car in the first place. People don't typically do engine swaps for that reason, they do it because they like the platform and they want something unique.

[fooddude]

Originally Posted by glamcem

but LS-x series engines are dirt cheap

Since everyone says LSx engines are so cheap....

So, what's the best bang for the buck, but brand new, LSx engine?

(No used engines...because remember, we want reliable and close to factory brand new reliable, so a used engine will most likely be mid/high mileage and require a rebuild. And no rebuilds; because that would be a big extra cost; that will contradict the "dirt cheap LSx engine" since it won't be cheap after the extra big cost in a rebuild.

I see there's many on the Chevrolet engine page, from LS3-LS9....and they are all pretty dang expensive from $10k-$26k. I thought it was supposed to be relatively inexpensive!?

Where else do you buy brand new LSx engines? ..just the Chevrolet website?

Can you get a brand new LSx stock 400'ish hp engine for around 5k?? (No 200-300hp engines)

[EAGLE5]

Lots of relatively low-mileage LSx motors out there. GMs get in crashes all the time, and there are a variety of cars and trucks that use them. The aftermarket parts support makes the twins look pitiful. Still, the only reason I'd put an LSx in my twin is if the stock motor pops, and I don't think that's likely.

Originally Posted by fooddude

Since everyone says LSx engines are so cheap....

So, what's the best bang for the buck, but brand new, LSx engine?

(No used engines...because remember, we want reliable and close to factory brand new reliable, so a used engine will most likely be mid/high mileage and require a rebuild. And no rebuilds; because that would be a big extra cost; that will contradict the "dirt cheap LSx engine" since it won't be cheap after the extra big cost in a rebuild.

I see there's many on the Chevrolet engine page, from LS3-LS9....and they are all pretty dang expensive from $10k-$26k. I thought it was supposed to be relatively inexpensive!?

Where else do you buy brand new LSx engines? ..just the Chevrolet website?

Can you get a brand new LSx stock 400'ish hp engine for around 5k?? (No 200-300hp engines)