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*General Grand Sport Topic*

Old 01-16-2017, 06:27 PM
  #1061  
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Default Superformance GS

Looking at this picture, it appears to me that the windshield doesn't have the curvature of the real cars, and the A pillar is also considerably wider. Now, I've never seen one of these cars in person, so it could be the image I scanned. I think it looks odd though.

Old 01-16-2017, 07:23 PM
  #1062  
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There are a lot of things wrong with that car. It surprises me because Superformance did such a great job with the Daytona coupe. The cars on the web site don't seem a lot better.

I think of this as some sort of Resto-Mod. It's really not a replica.

Richard Newton
Old 01-17-2017, 12:01 AM
  #1063  
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Can't tell about the windshield curvature, Larry, but the A-pillar just looks strange.....

Jim
Old 01-17-2017, 11:34 PM
  #1064  
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Originally Posted by jim lockwood
Can't tell about the windshield curvature, Larry, but the A-pillar just looks strange.....

Jim
I think the windshield molding is much narrower than what has been used on others. That's why the A pillar looks strange. --- Ken
Old 01-18-2017, 04:46 PM
  #1065  
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Originally Posted by keystonefarm
I think the windshield molding is much narrower than what has been used on others. That's why the A pillar looks strange. --- Ken
It looks like more than that to me, Ken. Here is the A-pillar on our D&D prototype. Note the width of the door frame at the A-pillar; that SP GS door frame looks a lot wider..... doesn't it?

Old 01-24-2017, 05:03 PM
  #1066  
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Guys,

Thought you'd like to see how the GS 'bar' emblem that I produced for Larry's amazing #004 recreation turned out.

Took longer to produce than I thought and there were one or two hiccups along the way but, it's as near as dammit to the original in size, typestyle and profile.

The smaller image with the ruler is from the original #004 (courtesy of Richard Newton, thanks again Richard for your help on this one)

Thanks also to Jim for your assistance.
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Old 01-24-2017, 07:29 PM
  #1067  
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Very nice!
Old 01-26-2017, 08:07 AM
  #1068  
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Wasn't the race car of 1963 called the "Lightweight"?

Shouldn't our "GS's" be referred to as "lightweights" instead of Grand Sports. The Grand Sports Almost sounds like a Marketing name instead of an actual name Zora/GM Engineers would have used. (i.e.: CERV)

Even built off an original Corvette, with the ladder frame and the other items the weight is still easily sub 3000 pounds. It could still easily retain the lightweight moniker.

It would certainly distinguish between a C2 and a C4, .....

Thoughts?

Ty

Last edited by tyoneal; 01-26-2017 at 08:08 AM.
Old 01-26-2017, 08:55 AM
  #1069  
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FWIW, Ty, on the layout drawing for the frame, the name is "Light Weight Corvette".

As far as referring to our cars as "lightweights", well, in some circles I do refer to my MAI car as "The Lightweight". I've spent a lot of effort to make it true to that nickname so I feel somewhat justified.

Some replicas, however, scarcely weigh less than production Corvettes. In my not-always-humble opinion, it would do a dis-service to the concept to refer to them as lightweights..... but that's just me.

Jim
Old 01-26-2017, 10:16 AM
  #1070  
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Originally Posted by jim lockwood
In my not-always-humble opinion, it would do a dis-service to the concept to refer to them as lightweights..... but that's just me.

Jim
100%. I grew up in the era of the original Grand Sports and knew them ONLY as THAT....................Corvette Grand Sport, THE Corvette factory built race car. I never even heard the term "lightweight" until about 20 years ago.

Just my opinion too, and as they say, "opinions are like a$$holes.....................everybody has one.....................and some people are one".
Old 01-26-2017, 10:21 AM
  #1071  
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I've never heard any of the original driver's use the term Grand Sport. They've alway refereed to them as the Lightweight Corvette.

We're just going to have to live with both monikers.



Richard Newton
The Lightweight Corvette
Old 01-26-2017, 03:25 PM
  #1072  
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Grand Sport name, circa 1963 in letter from the Zora to FIA official:



January 25, 1963

To: Mr. George Rand
515 Madison Avenue
New York City, New York

Due to change in our plans we are canceling our applications

for homologation of Corvette Grand Sport. Reference number

of applications in question are 837 C-63 and 837 A-63.



Z. Arkus Duntov
Chevrolet Engineering
Warren, Michigan

(retyped, because I am not able to post pics or scans)
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Old 01-26-2017, 10:20 PM
  #1073  
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Originally Posted by tyoneal
Wasn't the race car of 1963 called the "Lightweight"?

Shouldn't our "GS's" be referred to as "lightweights" instead of Grand Sports. The Grand Sports Almost sounds like a Marketing name instead of an actual name Zora/GM Engineers would have used. (i.e.: CERV)

Even built off an original Corvette, with the ladder frame and the other items the weight is still easily sub 3000 pounds. It could still easily retain the lightweight moniker.

It would certainly distinguish between a C2 and a C4, .....

Thoughts?

Ty
Ty, I think it's just as well we never saw a Light Weight emblem!

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Old 01-29-2017, 03:14 PM
  #1074  
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Default My GS #004

Thanks Jim for showing me how they lightened the pedal assembly.....Maybe a few ounces.
Larry T.
Old 01-29-2017, 03:37 PM
  #1075  
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Looks good, Larry. Remember they even drilled the trailing arm alignment shims. Nothing was spared. Had I mentioned they also drilled the Z-bar?

BTW, for my own lightening program, I always weighed the before and after to get a sense of how much weight I was removing. I saved 1/2 lb by eliminating all the unneeded wires from the main, under dash wiring harness.

Did you happen to weigh that assembly before/after?

Jim
Old 01-29-2017, 03:56 PM
  #1076  
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Originally Posted by jim lockwood
Looks good, Larry. Remember they even drilled the trailing arm alignment shims. Nothing was spared. Had I mentioned they also drilled the Z-bar?

BTW, for my own lightening program, I always weighed the before and after to get a sense of how much weight I was removing. I saved 1/2 lb by eliminating all the unneeded wires from the main, under dash wiring harness.

Did you happen to weigh that assembly before/after?

Jim
I haven't weighed anything, I wish I would have. The plugs and shavings were all in a dust pan.....About the weight of one less pancake for breakfast.
I did the z-bar last year, and did the teardrop cut out of the steel core support for cooler lines pass through.
Larry T.

Last edited by zoraarcus; 01-29-2017 at 04:05 PM.
Old 02-08-2017, 05:04 AM
  #1077  
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Originally Posted by ianrand
Grand Sport name, circa 1963 in letter from the Zora to FIA official:



January 25, 1963

To: Mr. George Rand
515 Madison Avenue
New York City, New York

Due to change in our plans we are canceling our applications

for homologation of Corvette Grand Sport. Reference number

of applications in question are 837 C-63 and 837 A-63.



Z. Arkus Duntov
Chevrolet Engineering
Warren, Michigan

(retyped, because I am not able to post pics or scans)
=============================
This group is always the best.

This letter nips that in the bud, post haste!

Thanks,

Ty

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To *General Grand Sport Topic*

Old 02-08-2017, 05:43 AM
  #1078  
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Default Bouncing some ideas around, would love to have dialog.

To all:

I am wanting to run my car in the Ultimate Street Car Competition when finished with my GS and I am trying to plan the build in some respects to be competitive in the competition.

There two classes I can enter and at least have a car capable of being on par with others. (Driving aside)

Over 3200 pound minimum weight Vintage, or "Open" class which has no minimum weight but includes AWD's and others cars with fully computerized active suspensions.

What are the widest tires one can mount on their GS?

My thoughts initially are to run in the Vintage class at a goal of 3201 pounds, retro fitting ABS and Traction Control if possible, then adding weight to car as low and properly placed on the chassis as possible to increase handling.

Is there anyway to run 315's on all four corners without tearing up the fenders? I've seen small extensions added to the rear fenders to help accommodate larger than 275 rear tires.

BTW: With the C4 suspension having corvette hubs, and running a LS3 do you know anyone who has been able to get this to work, or offers a kit of some kind?

Also which Traction Control System would you recommend?

Thanks,

Ty O'Neal
Old 02-08-2017, 09:05 AM
  #1079  
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A 3200 lb. Grand Sport?????? The mind shrivels at the thought.......
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Old 02-08-2017, 06:26 PM
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Originally Posted by tyoneal
To all:

I am wanting to run my car in the Ultimate Street Car Competition when finished with my GS and I am trying to plan the build in some respects to be competitive in the competition.

There two classes I can enter and at least have a car capable of being on par with others. (Driving aside)

Over 3200 pound minimum weight Vintage, or "Open" class which has no minimum weight but includes AWD's and others cars with fully computerized active suspensions.

What are the widest tires one can mount on their GS?

My thoughts initially are to run in the Vintage class at a goal of 3201 pounds, retro fitting ABS and Traction Control if possible, then adding weight to car as low and properly placed on the chassis as possible to increase handling.

Is there anyway to run 315's on all four corners without tearing up the fenders? I've seen small extensions added to the rear fenders to help accommodate larger than 275 rear tires.

BTW: With the C4 suspension having corvette hubs, and running a LS3 do you know anyone who has been able to get this to work, or offers a kit of some kind?

Also which Traction Control System would you recommend?

Thanks,

Ty O'Neal
At that weight, you might as well throw in all-wheel-drive too.....

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