Do you have to be some kind of engineer or something to put on a turbo for an LT1? How much hp can you gain? How much does it cost? Is there major engine mods to gain 100 hp? Would it be easier and cheaper to supercharge? And last ? would you use a centrifical force or a roots style on an LT1? Cause the roots would sure look cool sitting on top!

 

Based on my experience installing a Procharger, there is no replacement for displacement. Do yourself a favor and learn my lesson, just put the money you need to spend to get the setup working correctly into pulling your engine and going with proven mods to get the horsepower gains you want.

 

Are you talking about a stroker, or more displacement?

 

I was able to build my own twin turbo setup for my camaro for around 3500 bucks total. Not including the motor and electronics but the main turbo hotside/coldside/intercooler and turbos I did it for around 3500 give or take a few hundred.

Thats MUCH cheaper than a procharger kit. turbo is the way to go IF you can fab up the stuff by yourself.

If you can buy the procharger or vortec or whatever blower head unit you go with seperately and fab up your own kit, you can do that to save money.

A turbo is fun but theres alot of heat under the hood with a turbo so cooling becomes alittle concern.

Either way is capable of making large amounts of hp. I like turbos more than blowers.

You dont have to be an engineer to put a kit together, you just need to know what is needed to have a turbo on a car. Main components, etc and the rest is not all that difficult. Good strong general car/mechanic knowledge is all you really need. Before i started my project I didnt know much about a turbo but after a few months of research and books, I became knowledgable and able to build my own setup.


new engine will make power as well. If you went with a stroker thats fine. Cost as much if not more than a home built turbo kit but capable of being more reliable since you have a "new" motor. An aggressive street strip stroker is in the 400whp range. A turbo car can easily surpass that with basic mods on pump gas and be docile. A 300 hp LT1 can make well over 500 on some boost, probably 7-8 psi and be capable of handling that. If you could swap heads to drop compression you can go with more to make more power and still be reliable as long as the tune is safe.

 

Turbo if you can fab your on...Greg at Blower Works if you cant.

 

A nice solid stroker...and then turbo! Why settle.

 

Build your car for top end power then slap a SC on to get you there faster.

 

http://forums.corvetteforum.com/sear...rchid=18245504

Look through this guys posts and see what he has going on.

 

My thoughts too!

The supercharger is nice, but it definitely isn't an ideal application with the stock engine. This also goes for turbochargers!

the roots style and twin-screw superchargers will make for a much more "street fun" combo. The modern TVS line from EAton is also pretty impressive. No kits available for the LT-x.

A person can take a supercharger head unit and "fab" their own bracketery, but this is far from ideal! you would need some quality tools to make sure the brackets are true. Not to mention, you want the proper tooling so the bracket doesn't look like a piece of ****.

The stock piston rings are said to be good for about 500 horsepower, after that; it's in your interest to get the correct mods for the end-goal.

building a motor for top-end is pointless if you're going to turbo or supercharge it (with a centrifugal supercharger) because both of those power-adders are primarily intended for mid/top-end power. You'll feel like you're wrapping the p!ss out of the engine to get into the power band.

I firmly believe a solid stroker (or even a stout 355) is the "Best" first step!

 

For just 100 hp, a good head and cam swap will reliably get you there.

For power, definitely turbo http://www.youtube.com/watch?v=cccYWADbHPw

Thomas

 

If your goals are more than that, go FI !

But then you will likely need to yank the engine and build it first for FI if you really want the boost / power...

 

This is what I want! I don't need a crazy race car, I just want to make an LS1 think twice when I stomp it. So heads cam and maybe stroke it out to 383!

 

With the amount of resources at our disposal these days going anything but turbocharged seems like a waste of effort. The power you can get from a turbo is unmatched with superchargers. Plus the myth of turbo lag is a term that carries less weight now.

 

You cant beat the sound of the Blower. I think most will agree to that. Im going supercharged with my setup around 16-20lbs of boost. But I guess whatever floats your boat.

Look at the response on this supercharged car.

http://www.youtube.com/watch?v=R2o7k4Cbou0

There will be a slight lag with turbo, If not top fuel dragsters would run them.

Build a solid engine first.

 

I will disagree with the statement about turbos being mid to higher rpm power only. A properly sized turbo motor will make plenty of low end power. Turbo diesels for instance. I dont take my 401 over 6000 rpm. Its peaking somewhere in the 5500 rpm range. Thru the converter on the dyno it was over 1000wtq by 4000 rpm at the top of the converter stall. Probably skewed numbers from the open converter, but this setup spools very quick and when 10 psi comes on in about a second, you need to hold on and pay attention. Rear tires most always break loose and send the car on a sideways mission. The low end is insane. It has power everywhere tho.

Most large V8 turbo setups dont need high rpm (over 6000). Most turbos have best operating efficiency on smaller cubic inch motors with higher boost pressures, or run a larger cubic inch motor with less rpm to have a higher pressure ratio to get it in the turbo sweet spot.

The smaller the motor, the more rpm is generally needed to get into the sweet spot. A 350 or larger V8 can get insane power without the need to go over 6000 rpm.

Centrifugal blowers need abit of rpm sometimes because motor rpm drives the pulley which makes the boost. Thats one draw back.

 

I see where your coming from. IF you couldn't tell i am biased towards turbo's. haha

The only thing i think shoudl be said is that top fuel doesn't run turbo's because from what i gathered they just don't want to allow them in. Everyone knows there more eff. then blowers and will make more power. Plus lag is none existent in a pure drag car. thats what the trans brake is good for. haha

Well stated.

 

What about running something like an STS setup? Run a big single or a twin turbo in the back. You don't need an intercooler, just longer piping to the FI. May be a pretty cost effective setup if your adventurous.

 

Centrifugals have a step up ratio (transmission) inside the unit. this, coupled with engine speed, and pulley sizes will determine the "power delivery" of a belt-driven device.

I completely agree that a properly sized turbo will generate a lot of low-end power. I learned this in the miata community, the mp62 eaton blower was "said" to make more power on the bottom-end. It turns out that the proper size turbo make more power throughout the entire rev range.

I'm not aruging the efficency of a turbo over a blower, but most people tend to over-size (per application) when selecting a turbo, and thus resulting in a mid-range, top-end monster. That doesn't mean they have to spin the engine past 6k-6,500 rpm, just that the power comes on late, and is short lived.

 

Completely agree on turbo sizing. i for one size turbo's for mid range power as this is usefull for 99% of your driving. I just love watching a turbo make a flat torque curve for 3-4k rpm. Peak power is over rated.

 

Actually, the C4's (especially a TPI motor) make a lot of low-end torque. I would keep the stock cam and FI, and just let the turbo take over mid-range on. This would work great for someone looking for quick horsepower on a stock motor, as long as you didn't get nutty with the boost.