whats the plus sides to turbo....u have lag, where as supercharger u dont ...im debating on what i want to do with my engine..if i want supercharger or if i want to turbo it, ive never seen any1 with a turbocharged camaro, well turbo v8 anything around where i live, and that'd be the unique part, plus i could stop worrying about getting headers, is there a turbo kit that will let it still be my every day driver? for instance comes with all the remounting parts to keep AC and all that? or do you have to forget about ac and all when you get it ...whats safe amount of boost to go with on a stock lt1, and what kinda gains would you be looking at getting?...i watched the 525 hp 600 torq video and...it doesnt have the extreme blow off like a eclipse gsx that'd be what i'd want...can you have that with camaros or no?

 

Turbo is the way to go, and yes you can have the blow-off sounds if you want...just have to put on a loud blow-off, like an HKS SSQV, or Tial 6 port.

Jose

 

whats the deal on increasing boost...at 1500 rpms u only have 3-4? and then 5000 or 6000 u have 8 or 9?...but supercharger u have 8 psi from idle basicly till u let off...or does turbo kick to max boost faster than that?

and what kinda boost would u wanna run on stock lt1? ...sense i have 100k miles would i want to do a rebuild b4 i put her on there? or get dished pistons at least?...i'd prob wanna get 8 or 8.5:1 pistons then i get heads done to put me up 2 9 or 9.5:1 or not smart? leave the heads alone and get higher compression pistons? (higher than 8 or 8.5:1)

 

A supercharger makes boost based on the speed of the crankshaft(since it spins the impeller). Since a turbo is exhaust driven, it doesn't have a linear curve(straight) and boost will typically increase faster at higher RPMs.

Turbo is definitely the way to go. Little to no lag with a small block because the motor moves more air than a 4-banger of V6.

The BOV sound can be changed like Jose said. Some BOVs are quieter for the stealthy approach, some are loud and let everyone know what you're running.

 

Like mongse_1 said, a S/C is more linear on boost. With a turbo you can hit peak boost very quickly and hold it over the entire rpm range. As for how much boost on stock motor...well I hear anything below 7-8psi is marginally safe. Doesn't really matter how much boost you run, its still going to need a rebuild if you wanting to make any real hp #'s. For compression...I personally would go 9:1 or below.

Jose

 

I'm not convinced that turbo is definitely the way to go. You have to look at each situation individually.

A turbo may be the way to go, if you have unlimited funds, and/or the skills to fabricate your own setup. You could go with one of the few kits available, but if you want a monster setup, you'll be peicing your system together. You will aso have a harder time getting it tuned, and will most likely need an aftermarket fi system if you are going for 600+hp. The PTK kit looks good for a LT1 street car.

A supercharger, (and I'm talkin centrifical for LT1's, LS1's) will be cheaper, and easier to install and setup. Vortech and ATI are both good choices. Because of the linear boost, it will be easier to tune, and the stock computer can be used, even on some beastly cars like LJ's. Since the SC kits are more common, and have been out longer, it's easier to find help troubleshooting problems. You can have a BOV on a SC too, and you get that cool whine.


Either system on a built motor can can provide enough power to render street tires useless at 65mph. Either system will drive pretty much like stock, and isn't really noticed, till you mash the gas.

If I was trying to build a car to break all the LT1 records, and had 1.5 craploads of cash to do it with, and the skill and time to put it together, I'd go big single turbo. But then again, the records that'd I would be trying to break have been set by SC'd cars.

For the cheap (well, at least cheaper) and easier setup, on a street car I'm just looking to have lots of fun with, and still be faster than 99% of the cars on the road, I'll take a SC.

 

but can i push as much boost with a sc as a turbo?...and just curius (i have a 91 z tuneport with a paxton supercharger..would sound sick with blow off valve

 

Either can do what is needed. 25lbs sound good? Either a turbo or blower can provide that.

And blowers cant really use a BOV like turbos due, and have the same effect/sound. I've tried it.

 

Boost is boost, it doesn't matter how you obtain it. There are guys running 30 pounds of boost around here (Houston) on S/C's. Anything is possible with the right equipment and enough money.

 

The tubro will be more work in the long run and most likely cost more too. It does have a few advantages over a blower but if you going to have a forced induction car your going to put up big numbers any way you do it. Provided that you have a forged bottom end and a fuel system. Do you have any real power goals? With all the tubro threads going around you probably want one of them. But I wouldn't rule out a sc too quick. There are so much more popular and easier to get tuned. I am not sure about your mechanical level and the less you have the more money you will be spending at a shop. Read in here for a bit, you will find out what you want to do with your money pretty quick.

 

i want to basicly run 10.5-11 and it be my every day car...that is my goal

 

You'll have a lot of money sank into it if you want to run 10.xx and drive it everyday. If those are the goals, I'd consider nitrous.

One other thing that I do like about turbochargers over superchargers is the lack of stress on the cranksnout by the turbo. The belt on a high-boost setup will put quite a bit of stress on a crank. Even at 12#, I was running a double keyed crank hub.

 

When I let off the gas coming off of boost, or even at high rpm, my BOV goes "PSSHHHHHHHHHHHH" I think it sounds badass, many people agree. I haven't heard anyone say they didn't like it. You musta done something wrong.

 

single turbo system runs off of 1 header or is at the y pipe? does turbo need to cool after you'v run it hard? or is that waht innercooler is for?

 

Turbo is the way to go. You can choose how much boost you want with the flip of a switch. You can run 5 psi to wheel around town, then flip to 20 (if you want) when somebody pulls up next to you and wants to run.

We need to coin a new term called Supercharger Lag. Cause every centrifugal supercharger has it. Why do people think they will get full boost at idle from a supercharger? And then go buy a centrifugal supercharger? If you want full boost at any rpm put a 6-71 on it. Don't think you are going to get it from an ATI or Procharger or Vortech. They have LAG clear to redline and fall on their face with every shift. If you want to run any more than 10 or 12 psi you will tear the hub off your crank and smoke your belt. I've run almost every kind of supercharger, blower, turbo, NOS, you name it for over 20 years, and I'm sold on turbos.

Our STS turbo kit bolts on with no modifications in about 3 hours and we put down 522 RWHP and 620 RWTQ with stock heads, stock cam, stock fuel system, stock computer, automatic trans and 2.73 gears - With our basic system and our methanol injection system. Car drives like stock, gets about 30 mpg, goes about 200 mph, and runs 11's at very high elevation. Whole setup is only $3500. You can get up Saturday morning, put it on, and drive to lunch with way more streetable power than you can imagine.

That is my 2 cents. Actually, now that I have read it again it sounded more like about 6 cents.

Good Luck with your project, Rick @ STS