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Old May 6, 2009 | 07:59 PM
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I WILL join the Texas Mile 200+ mph Club. And I would prefer it happen in a Corvette that I drive to/from the track. Keep in mind, I'm young with no sense of urgency to kill myself. This is just a long-term goal.

Now, putting aside the general stupidity and danger of this event. How would a late-C3 do with this kind of acceleration? Would it be so much easier, safer, cheaper, and an all-around better idea to start with a C5?

Regardless, I still plan on assembling an LSx C3 to sit next to the C5. But my dad was telling me how much his '75 used to kick out into a spin.

Any help or discouragement is appreciated
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Old May 6, 2009 | 08:13 PM
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You will have a great deal of work to do to put together a C3 200 mph Corvette that will get you there safely
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Old May 6, 2009 | 08:50 PM
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do that in a C5
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Old May 6, 2009 | 08:51 PM
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Originally Posted by imma_stocker
I WILL join the Texas Mile 200+ mph Club. And I would prefer it happen in a Corvette that I drive to/from the track. Keep in mind, I'm young with no sense of urgency to kill myself. This is just a long-term goal.

Now, putting aside the general stupidity and danger of this event. How would a late-C3 do with this kind of acceleration? Would it be so much easier, safer, cheaper, and an all-around better idea to start with a C5?

Regardless, I still plan on assembling an LSx C3 to sit next to the C5. But my dad was telling me how much his '75 used to kick out into a spin.

Any help or discouragement is appreciated
C3's were not designed with the aid of CAD software or wind tunnel testing, and they certainly weren't designed to go 200+ MPH. You can make almost anything go 200 MPH but you will have to do some aerodynamic add-ons to make the C3 stable at those speeds. Lots of trial-and-error there and an error could be fatal. A C5 would be a better choice for a high-speed attempt. Listen to your dad. Occasionally us dads actually know what we are talking about.



Rick B.
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Old May 6, 2009 | 08:54 PM
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It would be a lot easier with a C4, C5 or C6. Even a 3rd gen F-body would be a good candidate. You can do it with a C3 but it's going to be very, very tricky. Having a wind tunnel at your disposal will help.
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Old May 6, 2009 | 10:14 PM
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My dad would appreciate your advice haha. I'll leave the 200mph dreams for another C5 or maybe a Porsche 930.

How much would be involved with turning a C3 into an 11 sec street car? Roaming the boards looks like it wouldn't be much additional work if I'm already planning a moderate resto-mod and LSx conversion.

This traction issue has me worried though. If he spun his '75 at stockish power, what happens with 500-700whp?
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Old May 6, 2009 | 10:51 PM
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Originally Posted by imma_stocker
My dad would appreciate your advice haha. I'll leave the 200mph dreams for another C5 or maybe a Porsche 930.

How much would be involved with turning a C3 into an 11 sec street car? Roaming the boards looks like it wouldn't be much additional work if I'm already planning a moderate resto-mod and LSx conversion.

This traction issue has me worried though. If he spun his '75 at stockish power, what happens with 500-700whp?
11 seconds isn't out of reason and you won't need 500 RWHP. 500 RWHP and slicks will break a stock rear end somewhere between the rear u joint and the outer axle first time out more than likely. Back half it or add a 12 bolt tom's rear end setup and slicks to hook up that much power. It is not just about engine power. 500 RWHP needs the entire drivetrain modified and suspension set up for your purpose.
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Old May 6, 2009 | 11:40 PM
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Originally Posted by 63mako
Back half it or add a 12 bolt tom's rear end setup and slicks to hook up that much power. It is not just about engine power. 500 RWHP needs the entire drivetrain modified and suspension set up for your purpose.
Thanks for the guidance guys, keep it coming!

Could someone explain "back half it" more? Is that an IRS to true axle conversion? I haven't got a lot of experience with RWD domestics
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