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-   -   An LS-2, Turbo vs. Supercharger (https://www.lateral-g.net/forums/showthread.php?t=7625)

undertaker 03-17-2007 06:27 PM

Quote:

Originally Posted by californiacuda
You may want to go to Kenne Bell's web site, lots of data on a corvette system. I have head that they do a lot of dyno testing on their systems and provide real reproducible results.

Callaway has superchargers & turbos also.

I personally wouldn't touch either option, your results may vary.

I've had friends with problems on mustangs with kenne bell 2.2L's big numbers on the dyno, leaks 2 months later etc. Results on vettes left much to be desired as well, the kit has been out for over a year.....not one track result, they're also larger than a maggie as for fit.

callaway rebadges pre-existing stuff for C5/C6 vettes at least and their super dooper derivatives, and marks them up substantially. There are more cost effective outlets out there. :thumbsup:

camcojb 03-17-2007 07:14 PM

Quote:

Originally Posted by undertaker
I personally wouldn't touch either option, your results may vary.

I've had friends with problems on mustangs with kenne bell 2.2L's big numbers on the dyno, leaks 2 months later etc. Results on vettes left much to be desired as well, the kit has been out for over a year.....not one track result, they're also larger than a maggie as for fit.

callaway rebadges pre-existing stuff for C5/C6 vettes at least and their super dooper derivatives, and marks them up substantially. There are more cost effective outlets out there. :thumbsup:


I don't know, myself and many others had great luck with the KB's on our Lightnings. You see the occasional hiccup, but no more than I see for any other forced induction.

Jody

californiacuda 03-17-2007 07:42 PM

The twin screw superchargers that Kenne bell and Whipple use are universally accepted as being more efficient units(produce more boost and lower IAT temps) than the older roots style (magnuson/eaton). As far as somebodies friend having a problem with the KB 2.2 on his Mustang. KB pretty much owns the market for Ford products, and generally has a very good reputation. I can't speak to the success of their product on Vettes. Recently KB got over 800 hp on a stock Shelby 500 with their 2.8 unit.

tyoneal 03-18-2007 12:36 AM

Undertaker:

Great Post! Did you build the engine in your Vette or have it done? Who did you have do it?

".... okay as for my own personal car I drag/roadrace/street drive an 03 Z06 with rear mount sts twin turbos (two gt35's) Off the bat the car made 553/489 stock in every sense of performance ie. stock manifolds (turbos mount behind rear tires) cats, cam, only modification to the engine was stiffer valvesprings. Of course that wasn't enough, I wanted a 402 or 427 motor built to the heavens wild flowing heads the big bad fast 90/90 setup, headers etc. My buddies talked me out of it and all we did was rebuild my 22K mile stock 346 LS6 with forged pistons/rods arp fasteners, stock crank, new bearings, head studs, cometic gaskets and a very mild (as in you wouldn't know its there if I didn't tell you) cam. Stock heads, stock manifolds, cats mid section pipes etc. bumped it from 7 psi to 14 psi......710/640."

I've spoken to the local sts rep. about this application. He was a really nice guy and seemed to know his stuff. When you rebuilt your 346 LS6 it sounds like you created a hell of an engine. Would you mind giving some more specifics on your engine? ie. Brands and sources.

I like the idea of getting good gas milage as well. Kind of make the whole thing, "The perfect combination".

What cr did you use. Would you recommend a long block assymbled from sdpc? Does the Vette have a fair amount of room behind the axle? I am leaning towards a 3-link in the rear and I'm not sure how much space is required.

Basically, I'd be starting from scratch so I could put one together in whatever way would be the most efficient.

Any thoughts if you were starting this way?

Thanks again for your time.

Ty O'Neal

camcojb 03-18-2007 08:26 AM

Ty,

Just realize that although the STS does work and can make big power they will produce more lag than the traditional front mounted turbo setups. The STS was a popular kit on the new GTO's as there was nothing else in the market for them a couple years ago. In the last year or so a couple well-priced twin turbo kits hit the markets for the GTO's and the STS guys are jumping over to them, all saying the same, want less lag.

That and the ground clearance issues with a lowered car had me looking elsewhere, but bottom line they do work, are smog legal on virtually all applications, and pretty good bang for the buck.

Jody

tyoneal 03-18-2007 07:59 PM

Quote:

Originally Posted by camcojb
Ty,

Just realize that although the STS does work and can make big power they will produce more lag than the traditional front mounted turbo setups. The STS was a popular kit on the new GTO's as there was nothing else in the market for them a couple years ago. In the last year or so a couple well-priced twin turbo kits hit the markets for the GTO's and the STS guys are jumping over to them, all saying the same, want less lag.

That and the ground clearance issues with a lowered car had me looking elsewhere, but bottom line they do work, are smog legal on virtually all applications, and pretty good bang for the buck.

Jody

Jody:

If you had a wee bit of lag off the line, it seems it might actually be a good thing, as many of the LS-2's make enough down low to get the wheels spinning easily n/a.

Would this be wrong?

Ty O'Neal

tyoneal 03-18-2007 08:05 PM

To All:

TurnKey Engine Supply uses the K-B Supercharger on their LS-2 700hp package.

I would think they have had luck with the K-B if that is what they use on one of their, "Packages".

http://www.turnkeyenginesupply.com/street_60700.htm

Has anyone seen or know someone that has one of these engines, and how they like it?

Ty O'Neal

tyoneal 03-18-2007 08:11 PM

Quote:

Originally Posted by deuce_454
well i sort of agree on the above comments on turbos and superchargers, but some of them are not true in the sense that they arent comparing apples to apples..

if your goal horsepower wise is below 600 shaft horsepower you can do this on a prety much stock ls1/2 using what ever device to boost the engine you want.. if your engine survives 7 pounds of boost it will do so regardless fo what is used to produce the boost..

But a 7 pound turbo engine will produce noticably more rwhp than a mechanically supercharged engine.. as you dont rob the engine of shaft horsepower to drive the turbos, as is the case for a supercharger.

the hardware for the turbo setup is actually cheaper than a supercharger kit, but it reqires more fabrication by you, so if you are any good with a welder and dont charge yourself by the hour id stick to the turbos..
a pair of manifolds costs a hair under 1 grand from schwartz, the turbos are 800 a piece for garett units and the wastegates are about 300.. a good intercooler will run you from 300 and upwards and the tubing costs whatever you want it cost depending on material.. exhaust tubing, mag welds and paint works just as good as stainless, tig welds and polishing, for intercooler piping.. but the price certainly isnt the same..

all in all you should be able to put together a turbo system for less money than a supercharger cocts... IF your horsepower goals are the same.. and if you do the work your self..

if you dont believe me just take a look at a JY turbo hp.. they are making 650 hp for less than 1000 bucks on a twin turbo 5.0 ford.. http://www.2quicknovas.com/turbos.html

deuce_454:

I would definately love to have TT, however with two shoulder replacements, at this point, I'm not sure how well I'd be able to do it myself.

Now in the future, who knows.

tyoneal

Mizfit 03-19-2007 07:53 AM

Give us a call if you go the LSX KB direction. As of right now we are building a resleeved LS7 block 427 with a KB and 8 rib setup that should make anywhere between 800 -1000 rwhp. It is going into a 1960 Vette (He is also having everything completely polished through us from all covers to the engine block. We can beat turnkey's prices...Good luck with your build:thumbsup:

Taylor
Mizfit

tyoneal 03-20-2007 12:13 PM

Quote:

Originally Posted by Mizfit
Give us a call if you go the LSX KB direction. As of right now we are building a resleeved LS7 block 427 with a KB and 8 rib setup that should make anywhere between 800 -1000 rwhp. It is going into a 1960 Vette (He is also having everything completely polished through us from all covers to the engine block. We can beat turnkey's prices...Good luck with your build:thumbsup:

Taylor
Mizfit

==============================================
Mizfit:

What kind of $$$ would I be looking at to get a drop in, complete, turn key engine, with 750 hp @ the flywheel. I do like the idea of the bypass value so with a relatively small engine it would get good mileage, and at the grop of your right foot it would Haul Ass.

Can a KB Super Charger dropped on a forged bottom end LS2 make the power, be very dependable, and get good mph?

Thanks,

Ty O'Neal


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