Sal Collaziano

Hey. Are there any C4s out there (Preferrably L98) that basically have only one major mod - a supercharger? I'm curious about what the results would be with one simple mod as opposed to building up a setup of many parts and lots of time...

96VegasVette

:rolleyes: I don't think I would refer to a supercharger as "one simple mod"

Sal Collaziano

Hehe. Okay. Well.. One complex mod, then.. A supercharger. Anybody?

NoWorries

Simple math equation:

The supercharger is almost as bad for a stock bottom end as NOS;
Supercharger~=NOS

NOS=EEEEEEEEEEeeeeeeeeekkkkkkkk

Therefore;

Supercharger=eeeeeeeeeeeekkkkkkkk

Sal Collaziano

Hmm. I'm not the sharpest knife in the drawer. :p: Are you saying it's too much for the car off the line?

NoWorries

I'm saying its too much for the stock rods and pistons to take.

96VegasVette

I agree

Sal Collaziano

Thanks. What kind of horsepower would 6 psi give me? I suppose I could always do this in case I get impatient and then work on the motor later - after that, I could raise the psi...

Rick93Z07

Sal,
The L98 is not a 5.0L HO Ford motor. Superchargers are not a "no brainer decision" on these cars. They are not a very popular mod because the motor is not well suited for it. Most people go the head and stroker route for reliability.

Sal Collaziano

I hear ya.. What about a supercharger on the stroker? I'd like a supercharger at one point or another...

AKS Racing

Well being as noone has spoken "yes", I will chime in. I agree with an earlier comment, it is not one simple mod, it is one complex mod. I had the supercharger on a stock bottomend. Held up just fine. Really had to play with pulleys to deliver 7# on an ATI system. Mine had difficulty delivering the boost do to the previous mods on the motor. The motor delivered approx. 500RWHP with the supercharger.

Things that you should plan (along with my mods/approx cost):
-ignition upgrade (MSD6BTM/$250)
-clutch upgrade (SPEC Stage IV/$900)
-rearend upgrade if auto (3.45D44/$800)
-tire upgrade (335ZR17s Comp TAr1/$200)
-engine mods (unlimited/???)

This seems to not be a very popular swap, as it is quite expensive to begin with. Then, they don't last very long on the stock bottomend. So invariably you have to go do the mods that you are trying to short cut to begin with.

Aaron

Not Stock

What kind of supercharger are you running? Did you have any trouble getting it tuned or did it run out of the box?

Flame Red

AKS Racing -

I have an ATI on my L-98. On a good day I get 2-3 lbs of boost. What exactly did you do to the pulleys do get 7# of boost???

Flame Red

91Vette

2-3 lbs of boost on a good day? I looked into an intercooled ATI system for my 91 a year or so back. I think the kit promised at least 6 lbs. I guess I'm glad I didn't go with it.

Not Stock

:confused: :confused: wow :rolleyes: :rolleyes:

FU

A intercooler is a must

A

I think SC's are great and TC's are even better! I'd love to have either one BUT for the kind of money (read big money) that you'd be spending on just the SC kit alone, not to mention the other mods that would be needed for it to run properly, you could buy say a nice mean set of cylinder heads to make more power and still have some $$$ left over.

It sounds like a really cool idea, but it seems that your money would be better spent in other places to arive at the same goal (more power).

BUT if you MUST have some sort of power adder (and are ready to handle the headaches that are associated with any of them), consider a NO2 kit as opposed to a SC. There's alot of horror stories about NO2, but if you actually do your homework and learn about it a little bit you'll find out it's pretty cool (and it does the same BASIC thing a SC does; puts more oxygen in the combustion chamber.)

:smash:

AKS Racing

Flame Red,
Let's all step back for a moment and recognize boost for what it is. Boost is a measurement of an engines resistance to accepting the air that one is trying to force the motor to accept. As the RPM of the motor is increased, the speed of the blower is likewise increased (in step fashion), thus providing more airflow and thus more boost indicated. Just because the system does not show a large amount of boost, does not necessarily define that the system is not delivering serious hp. Initially my max boost was in the 2# range at 5400 rpm on a system that was sold as 12# system. I have changed driven pulleys twice and have the equivalent of what ATI claims would be 23# on a stock motor. My stock driven pulley only delivered 2# due to my set-up at the time and the limited RPM range (remember LT1s spin to 6500 without much issue).

My set-up when first installed was:
-11.2:1 static (185 cranking compression)
-large hydraulic roller cam
-SR intake
-Stage IV TPIS heads
-58MM throttle body
-free flowing exhaust

The max boost was measured at shift point of 5400 RPM

As a test, I ran the motor to 6000 RPM to simulate my new motor configuration. The boost jumped to 11#. Very RPM dependent. I still do not think that an ATI P-600 is going to move the kind of air to make the serious levels of hp, but I am going to give it a try.

I think the supercharger is a great power adder, but tends to be very expensive. The supercharger needs to be viewed not as a mod, but as a total package. Everything you change in the sytsem from that point forward will center around the supercharger.

Aaron

black bart

Buy a new boost guage that one is broke

Bruce

Supercharger is making great power. Yes when building a high horsepower supercharge motor it is far more expensive than NA motor. Mainly is tuning and fuel system (example 50lbs injector is $600 alone, 8An fuel line and external fuel pump can cost up to $1000 and tuning from $500-$1000, MSD 6BTM $317)

I have personally seen Shalin dyno tuned a camaro 1995 Z28 running ATI 7PSI procharger stock motor and stock cam. Header, MSD6BTM Inline fuel pump 42bls injector, dyno tuned resulted 405 rare wheel horsepower. This car made 60 plus passes at the race track and lasted 25,000 mile street driven and finally pistons let go....Now he is rebuilding the motor with forge piston and running more boost for more power. yeah baby


Bruce
93LT1 conv w/ZF6
top end mods
150hp NX jetted