whats the best of these. i like the wining noise of superchargers but thats not the point of them. looking to run over 10 psi. also of subject, can you controll boost on a sc. are you able to turn it down like a turbo. i will probably go with a turbo set up but looking into a sc also. o if it matters i got a 96 z28

 

i have a vortech s-trim. i love the unit but its is the newer gear style and you hear a slight whistle which sucks.. the older stlye was loud! ATI blowers are loud so thats the sound you want.

know for a blower you either add a bigger pulley for more boost or a smaller one for less,its not as easy as a turbo setup.

 

get a vortech t-trim...really loud and huge performance gains

 

You cannot change the boost level of a supercharger. It is what it is. The only way you can change it is by freeing up restriction in your setup, or changing pulley sizes. In a turbo set up, you just have to adjust a wastegate and that adjusts the level of boost.

Depending on what you want, I like the prochargers. If you want LOUD the P600 from ATI is really loud, however not to powerfull of a supercharger. I have the D1SC from ATI, and it is also loud, but not as loud as the P600, however I just dyno'd at a little less than 600 RWHP, and you won't see that with a P600. Vortec's T-trim also makes a bit of noise and power, this could also be a good choice.

 

you wont be far off from 600rwhp with a p600b if the setup is right...its just easer to do it with a d1

you are making 590rwhp with a d1sc on a 383 with a little over 1 bar

im making 544rwhp with a p600b on a 355ci @ 1bar

....you do however make more rwtq way sooner....

nice setup Call911

 

ok. well what would make more power on a fully forged 383 with le3 package and custome grind cam. a d1, d1sc, f1, or vortech t-trim(not to familiar with vortech either is the t-trim their best)

 

>I have a T-trim, But wish I got the YSi-trim instead

 

the the differance between the t-trim and the ysi

 

You need to think of the SC in terms of it's CFM rating, the size of your motor, and the rpm you want to turn it. As far as the quality of the head units, I have used both and consider them pretty much equivalent. I like the Procharger's intercooler system better than the Vortech system, but both work. I also like the self-contained aspect of the Procharger, though you do need to periodically change the oil, which is a PITA in a 4th gen.

The SC which will flow more air will generally have more power potential. This assumes ~equal efficiency, which is a reasonable assumption in this case. To decide which you need, you need to figure how much boost you want to run. Then you decide how big a SC you need. Use rpm*displacement/3,456 to figure how much air your motor will pump. In the case of a 383, it will flow ~720CFM at 6,500rpm. You will therefore need ~1500CFM to reach 1bar (~15psi). A pump gas setup can't really use more boost than this, so I would say you need a head unit that will flow ~1,500CFM. The more efficient the motor is, the less boost you will see for a given CFM but the more hp it will make.

I wonder if you have thought through the costs of the supporting components you are going to need? Take the cost of the SC kit and at least triple it to get a rough idea of the minimum needed.

Rich

 

im not to worried about the cost. i mean my pockets arent endless, but i love to have power and i cost money. and im willing to spend it. im not planning on running pump gas (im still researching this also). boost wise i would like to run over 15 psi. that seems to be where everyone is running to get over 600rwhp. im aiming for 700rwhp. im also wondering which makes more power, a 355 or 383. i hear mixed stories constantly. either way im going to be running a le3 package (of coarse a custom cam) on stock castings. the afr heads would be great to have but dont seem to be needed all that much. dont get me wrong their the best, but stock casting can be make to clow pretty damn good, and ill stick with them. from what i've read, im going to go with procharger. if the vortech and procharger are about =, then im going to go with the loudest of the two. i love a load blower noice, and ati seems to be the one.

 

D1SC = 1,400cfm
F1 = 1,525cfm
JT trim = 1,450cfm
YSi = 1,600cfm

Most people see more boost than you would calculate using the above formula, which ASSumes 100% VE. Both sound about the same. What are you going to run if not pump gas? Buying, storing, and dispensing race fuel is a PITA. And you will be limiting your range to how far you can go on half a tank (you need to get back too).

Rich

 

See Im Not Real Sure On What My Choice Are Other Than Pump Gas. Thats Why I Said That Im Still Researching. If You Could Help Me With That, That Would Be Great. From What I Understand Its Tremendously Exspensive, But This Is Going To Be Pretty Much A Track Only Car. With A Couple Drives On The Street To Rub It In. Lol

 

If it's trrack only and you free choice of fuel you could use a bigger blower (and more boost) than any mentioned. However, a lot of fab work will be needed to get it to fit on a 4th gen. There just isn't much room.

We run C16 on the blower race cars and it's currently running ~$600/54 gallons with the shipping and drum charge. With C16 about $11/gal. it makes me glad my race car is set up for methanol. Methanol is currently ~$2.50/gal., but you use ~2.5 times as much, so that's equivalent to $6.25. Still a lot cheaper and it runs so cool that no intercooler is needed.

Rich

 

O ok. So what exactly is methonal. And whats the differance between methonal and c16, and which one is better.

 

Methanol = methyl alcohol. If you do a search, you can read some prior discussions about the pros and cons. It's a much better race fuel than gas, but it does have some significant disadvantages as well. Mechanically, you need a fuel system that can flow ~2.5 times as much fuel to run methanol v. gas. That is not a small problem, BTW. Methanol is also quite reactive and some of the standard fuel system components will be degraded by it and need replacement. It is also more toxic than gas and quite "pungent". The fumes will make you sick pretty quick.

Most blown race cars using methanol also use mechanical fuel injection. NA cars usually use carbs. My bracket car is the only one locally using methanol and EFI. It's been quite interesting and fun getting it set up.

Advantages of methanol include the very high heat of vaporization - it runs very cool and does not need any intercooling, as evidence of this. It is very detonation resistant, equivalent in that regard to ~114 octane gas. However, when you consider the cooling effect and the slow burning aspect it really can't be directly compared. Suffice it to say that there are Roots type blower cars running 14+:1 compression, 30+lbs of boost, and alcohol (with no intercooler). Just can't do that with gas.

An EFI/centrifugal supercharged 4th gen running methanol would be a cool setup. But it would be quite a project and would need one mondo fuel system.

Rich