Both're pretty hard to install from what I hear. Turbos have to spool up,
but there're many different things you can do to play around with them. Get
a smaller turbine and it spools up quicker, but less gain and vice versa.
Turbos are more efficient because they're run off exhaust gasses while
superchargers are run off the engine. There're different kinds of
superchargers too, some put out a constant boost, others increase as the
engine speed increases (I THINK this is right but I'm not 100% sure on it).
Either way you may have to tap the oil pan to get oil to the charger (this
is more common with turbochargers then superchargers). And Paradox is right,
the Syclones and Typhoons had turbos. Myself, I'd look for a kit with a
self-oiling charger and go either way.
Heres a kit, its a centrifugal style supercharger instead of roots style
like on the 3800SC Impala/Monte/Prix, which means you can intercool it,
(really only needed at 10-12+psi....)
And for around $2500 thats a good deal.
On Thu, 14 Apr 2005 16:59:02 -0500,
firstname.lastname@example.org (Flatline____44) wrote:
6 of 1, 1/2dozen of the other:
Turbo uses the still expanding exhaust gasses to drive the impeller to
compress the incoming air. This is the source of the turbo lag and
the imparting of heat to the intake compressed air.
Lag can be mitigated with variable vane turbo's and alternate sized
twin turbo setups. The imparted heat can be reduced with an inter
cooler. But the increased intake heat combined with higher combustion
pressures will require knock sensors and a seriously strengthened
bottom end for reliability at higher pressures along with hardened
valves etc. With a Turbo you can easily run from about 7-30 PSI of
pressure (whether the engine can survive those pressures is another
Superchargers provide quick response power, impart less heating of
intake air (all air that is compressed does heat however) and requires
less plumbing. However, Superchargers constantly drain power (if you
are using them or not), Superchargers can be noisy (esp roots types at
higher pressures). It is not as important but if you want an inter
cooler your choices are more limited (eg water to air), superchargers
also require clearance on the top of the engine as well as a drive
belt source location (Turbo's can be more conveniently located).
There's many many other issues with both systems that aren't listed
here. But you've got to ask yourself this:
How much power do you need? How much can you afford to spend?
Would you have room to install a small block? (say a nearly new, used
You can get quite a bit of power out of the 4.3 even without added air
pressure, would you be willing to port, polish, balance & blueprint &
further tweak your present engine?
Turbo & Supercharging is best the domain of vehicle manufacturers
looking for more power from smaller engines.
There is no substitute for Cubic inches. If it were my money (which
it isn't) I'd go for a light weight small block and squeeze it in. It
will be the most reliable, most efficient route to go.
that's my 2 cents.
I was looking for info on Syclones, and found this thread a bit late,
but.... I have put turbos on my car, myself. Although it is not a
computerized engine, so that made things quite a bit simpler, but the
power was awesome. Turbos also are quite easier on the drivetrain because
the power comes on as rpms build. I have also put a 350 in place of a 4.3
S-10. WOW, now that was a ride. I loved pulling up to a full size pick up
at a red light. They never knew what hit them. My truck would leave them
wondering what the hell just happened. My total cost was under 3 grand. I
had the reliability of a stock engine, but the power to weight ratio was
better than that of a Z-28 or SS Camaro. I went to the added expense of
putting in a limited slip rear, though, just cuz I liked the look of two
long black strips being left behind as I burned out.
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