Z06 performance
Racer
Joined: Jul 2002
Posts: 371
Likes: 38
From: Madison Alabama
Originally Posted by yagidara28
i was wondering what kind of modifications would my 99 A4 vert need to compete with a stock Z06 . the only mods i have done is a hypertech programar .
thanks for the opinions
thanks for the opinions
You'll still have Z06 gearing to deal with, but that will put you in the ball park.All kidding aside. . . . think "head and cam package", long tube headers, free flowing exhaust, e.g., Stinger's Exhaust System (or something like that), at least a LS6 Intake and Throttle Body , and a real good Dyno tuning. You might want to think about new gears as well ~ 3:42's at least. That's should put you in the competition
I have a 1999 C5 Coupe, 6 speed myself. For me a 2004 (405 hp), LS6 create engine swap was the cheapest way to go and get the biggest bang for my buck.
The real reason for doing the swap is ~ my old LS1 engine died. To rebuild it would cost more than the new LS6 engine, so the decision was easy. Oh, I forgot to mention I currently live and work in Germany ~ parts, labor alone would have run me around $10K for the rebuild of my old LS1 engine over here. I'm faced with 19% tax on everything, all parts have to be imported, and guess who gets to pay for all that. . . that's right, me. So, I ordered a new 2004 LS6 Create engine and had it shipped to Germany myself. The cost is still steep, but not as steep as it would have been if had ordered it through the Gemany GM/OPEL dealerships.
OK, good luck on your MODs. . . . whatever they are
Cecil
Heidelberg, Germany
Safety Car
Joined: Sep 2003
Posts: 3,558
Likes: 2
From: Cape Coral FL
A h/c package w/gears is only part of the equation. The Z06 has more agressive suspension, is lighter, has lighter tire/wheel combo, and fatter, different size tires. A good h/c package with gears and good tires and you will leave a stock Z06 behind, however when you get to the turns, he will make up ground on you. It all depends on what you want the car to do. You can get 405 crank hp easily. An A4 will probably require an aftermarket torque convertor and beefed up internals to run above 400hp for long. An upgrading to a Z06 suspension isn't all that hard or expensive, but you should get the car re-aligned to Z06 specs and corner balanced. Then you will have a contender.
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
Well it is a combination of things.
1. Power, you are going to need a cam to get 55 HP, actually you will need about 70 more HP to compensate for the weight.
2. Tires, ditch the runflats, Z06 sizes will fit on your stock wheel. Your wheels are just as light as a Z06 wheel, just your runflats are heavy.
3. Springs, sway bars, and shocks, Upgrade the hardware at this point also.
4. If you have a M6 that is good enough, an A4 will need gearing and TC improvements. Unless you have a distinct HP advantage an A4 is not going to take a Z06 on the track, dragstrip is a different ball game.
5. Frame stiffness, not that different but you can always mount a good roll bar system and stiffen up your frame some.
6. Brakes, just upgrade to Z06 hardware.
That should put you there.
1. Power, you are going to need a cam to get 55 HP, actually you will need about 70 more HP to compensate for the weight.
2. Tires, ditch the runflats, Z06 sizes will fit on your stock wheel. Your wheels are just as light as a Z06 wheel, just your runflats are heavy.
3. Springs, sway bars, and shocks, Upgrade the hardware at this point also.
4. If you have a M6 that is good enough, an A4 will need gearing and TC improvements. Unless you have a distinct HP advantage an A4 is not going to take a Z06 on the track, dragstrip is a different ball game.
5. Frame stiffness, not that different but you can always mount a good roll bar system and stiffen up your frame some.
6. Brakes, just upgrade to Z06 hardware.
That should put you there.
