Gentlemen. I have a 1993 Convt C4 "Black Rose" 6 speed with 15k miles. I
love the car and plan to keep it for quite a while. It is totally stock. If
I wanted more horsepower, meaner exhaust note and better brakes what would
you suggest. I took the car around Road America last year. NO COMPLAINTS.
Knowing the brakes would crash I hardly used them. The two or three times I
did caused them to begin to fade immediately. The car is for my enjoyment.
I'm not looking for anthing radical. Thanks in advance.
My seventh Vette.
The big problem with C4 brakes is that most solutions for better brakes mean
faster rotor destruction, so you end up having to replace rotors. They like
to praise Dave McLellan for the 150 mph C4 in 1984 and the higher
performance of the C4 throughout its life. However, basically, he improved
little over a 1963 (or 1965) FI Corvette. Brakes stopped faster, due to
being larger, however, they had no life to them in real competition, unlike
the C2 and C3 disc brakes. The '63 could already do 160 mph, so the 150 mph
'84 was really not quite as good.
Handling was better, with the 1 G rating but that was through some
engineering coaxing and the stickiest Goodyears they could get. Similar
tires on a '63 would have moved its .74 G right up in the high .9G to maybe
even 1G also. There was a lot more flex in the C2/C3 chassis, but that
could have been addressed.
Instead, you ended up with a car that had items lightened to the point that
in competition, life was shortened. Zora built his for competition.
McLellan built his for MPG.
So you have to replace the 93 brakes with something like the '95 ZR1 brakes
or the '96 Grand Sport brakes to really improve. Still, life is short.
Meaner note is usually done with various exhaust systems, however, some will
actually decrease power. Be sure to ask if anyone has dyno tested before and
after to see what systems really help. Sounding cooler but going slower
isn't what I'm after.
Corvette Fever magazine is starting a C4 project akin to their Shark
Attack project. There's a dollar ceiling on it so it might be
interesting to watch how they handle braking.
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