the C5 crowd is for simple and cheap mods that will give their new toy
a some extra boost on the low to mid RPM ranges. A few simple mods will
bring any C5 into the mid 4 second 0-60 mph range.
Real World Modifications that have proven to be very effective in raising the "seat of your pants" performance level. Although we can't go into everything here, the following will try to steer you in the right direction.
The C5's LS-1 responds very nicely to some minor tweaking of the stock intake system. To put this in proper perspective the stock air intake on a C5 is akin to an Olympic athlete running the mile with a wad of cotton in his mouth. In very simple terms, trash the entire setup from filter to throttle body bellows. A good after market CAI, (cold air intake) system will really wake up your otherwise stock LS-1.
is to find the proper
CAI system that will deliver copious amounts of fresh air to your
engine while maintaining a high level of filtration. The
system must be mounted in the correct position and have a well
engineered intake path that will minimize bends and turbulence.
The system must be easy to install and service, and most of
all be cost effective.
A well engineered CAI can deliver a 15 to 20 hp increase.
poorly designed system, and there are some real dogs out there, will at
best cost you time, money and horsepower. A poorly designed system can
also cause air/fuel calibration problems, due to poor sealing and
- We have tested all the after market cold air intake units. Details for getting the most bang for your buck are in the manual.
How about an extremely simple, cheap and
effective modification that tricks the computer into thinking its
always 50 degrees outside, yielding a more aggressive timing curve.
mod is worth about 8 horses, total cost .25 cents.
Nitrous Oxide Systems, now a division of Holley, makes a safe, reliable nitrous setup for the C5.
The entire system once installed with all the goodies is completely automated. In non computerized engines nitrous if not installed and set up correctly will in all probability fry the engine. We know a few engine re-builders that do a brisk business in piston and head gasket repairs due to improperly installed and poorly calibrated nitrous setups. The C5 is very forgiving in that respect as the computer can compensate for lean out conditions created by injecting laughing gas into the air box.
out our MANUAL for the full scoop on nitrous).
With some minor tweaking to an LS-1, as detailed in our manual, the stock Good Year run flats will go up in smoke with an off the idle launch.
semi-hard 2000 rpm launch will leave you sitting there boiling the
tires to the rims.
The LS-1 is really sensitive to changes in outside temp. On hot humid days the C5 struggles to make low rpm power. When the temp. drops to around 45-60 degrees the LS-1 really comes to life.
the cold weather there is so much power that the rear end of the car
will fishtail on a full throttle 1st to 2nd up shift (keep the traction
control button on unless you want to wind up facing backwards).
The run flats are the weak link in the acceleration game. On the other hand they ride great, are good on wet pavement, and have excellent tread life.
Good Year say's you can travel about 50 miles on them with no air. If you do get a flat don't use an air in the can flat fix to pump up an EMT tire. The sealant used in the flat fix will ruin the remote tire air pressure sensor and throw a computer code.
Keep an old fashion tire plug kit and a portable air compressor in the car in the event of a flat. You can probably plug the hole (if you can see it, usually a nail or screw) without removing the tire, then just pump up the tire. We have done this and the plugs hold fine.
FYI, the batteries in the rim mounted TPM sensors will crap out in about five years of use. The units have to be replaced as the batteries are sealed. New sensors retail for about $120 each, add tire mounting costs to this. If the sensors fail you have to reset the code every time you start the car. Thanks GM.
In an effort to gain some needed traction we fitted the C5 with a set of Nitto drag radials, damn the flat tires full speed ahead. We were surprised that these tires did not yield a significant improvement in traction over the stock GoodYears.
We also tried a set of Falken
F452's on the rear. WOW! What a
these tires are extremely sticky off the line, and they retail for less
then half of what a new Goodyear EMT is selling for. When the tires do
manage to hook up and the acceleration God's are smiling, the car can
do 0-60 in 4.32 seconds.
The standard mono tube (non-electronic)shocks on a C5 are pretty good for everyday driving.
After about 25k miles they tend to get a little tired. The problem was that up to now your only real options were factory replacements, hd Blistien shocks or super expensive coil-over units that require extensive alignment work. The factory shocks at $125 each are not much to talk about. The Blistien's are a cheaper alternative at around $80 each, but offer no real improvement in handling, deliver a harsher ride than stock and are a pain in the ass to install as the top studs are round and must be held in place with an allen wrench from inside the engine bay. This entails removing both the coolant and washer tanks to access the top of the shock studs.
We heard about Edelbrocks new line of IAS shocks, we contacted them and they sent us over a set to test on our C5.
The Edelbrock shocks shocks feature Ricor’s patented Inertia Active System (IAS). This exclusive design switches instantly between a firm and a soft circuit for superior handling and a smooth ride.
We installed these
without using a lift in about an hour. The results are amazing. The car
corners like a Grand Prix racer and rides like a Caddy.
Retail price for these babies are $120 each. We give them a thumbs up
for performance, easy installation
and overall value.
Stock shock and new Edelbrock unit
Another great addition to any C5 interior are neoprene seat covers. These spill proof covers fit like a glove and protect your expensive leather. They are easy to install (about 15 min. per seat)and enhance the cool factor of your Vette dramatically. Mid America can supply you with a custom set of covers for about $250
ultimate expression in coolness
is a set of chrome ZO6 wheels. These after market units are very high
quality, they came with logo center caps, chrome lug nuts and chrome
valve stems. The ZO6 drilled and slotted rotors, rear air scoops,tinted
signal lenses and front screens finish off the look
As with other Corvette
platforms the only limiting factor to the C5/LS1's potential is the
size of your wallet and your desire to improve upon what the factory