Chassis Rigidity

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Jun 5, 2006 | 09:10 PM

supervette2

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Instructor

Joined: May 2006

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Chassis Rigidity

What do you guys think is the best place beef up the frame on a 77 vette.
I dont want to twist up this beautiful car. Please help pics would be nice.

Jun 5, 2006 | 09:44 PM

supervette2

Thread Starter

Instructor

Joined: May 2006

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im thinking 6 point and mid plate. I dont know if i need more than 6?

Jun 5, 2006 | 09:47 PM

jpatrick636

Drifting

Joined: Jul 2003

Posts: 1,253

Likes: 1

From: East China MI

If you have the frame off, weld all the seams.

Jun 5, 2006 | 09:48 PM

icanfixitforyou

Burning Brakes

Joined: Jan 2006

Posts: 876

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From: Same as our leaders Out of my mind

Lot's of guys are installing spreader bars between the front shock towers. I am considering this as it seems to be cost effective and everyone has posted positive results with theirs. How much HP are you running that you want to beef up the frame?

Jun 5, 2006 | 10:47 PM

supervette2

Thread Starter

Instructor

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600 to 650 on conservative tune on 12 lbs of boost. 700 to a max of 800 at the crank hp with methonal finely tuned is the ultimate goal. I like the spreader bar idea! on a 275 40 17 inch mickey thompson et street tire.

Jun 6, 2006 | 12:26 AM

Little Mouse

Le Mans Master

Joined: Apr 2006

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If you really intend to make your frame stiff you need to go with
more then 6. A 6 point would not do much to help the torsional stiffness
start thinking 10 to 12 point

Last edited by Little Mouse; Jun 6, 2006 at 12:43 AM.

Jun 6, 2006 | 07:42 AM

redvetracr

Race Director

Joined: Aug 1999

Posts: 18,126

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From: WI

The older versions of the Chevy Power book have a "Corvette chassis" section...READ IT!!
...redvetracr

Jun 6, 2006 | 09:20 AM

69autoXr

Melting Slicks

Joined: Jan 2004

Posts: 3,245

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From: Detroit MI

Quote:

Originally Posted by Little Mouse

If you really intend to make your frame stiff you need to go with
more then 6. A 6 point would not do much to help the torsional stiffness
start thinking 10 to 12 point

Agreed, if you're really serious go with a full cage, however my five point bar stiffened things up significantly.

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Jun 6, 2006 | 10:04 AM

I'm Batman

Team Owner

Joined: Oct 2004

Posts: 23,831

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From: Springfield MO

St. Jude Donor '07

Quote:

Originally Posted by redvetracr

The older versions of the Chevy Power book have a "Corvette chassis" section...READ IT!!
...redvetracr

Which is available from Corvette FAQ. Google will turn up the link to the page.

Jun 6, 2006 | 02:22 PM

#10

spikezz4

Pro

Joined: Apr 2000

Posts: 625

Likes: 0

From: The Villages FL

77 Beef Up

Short of a cage, you might try the 68-75 convertible "X" under the frame. It won't change the looks of the Corvette a bit, and can be removed if you ever need to.

Spike

Jun 6, 2006 | 03:11 PM

#11

ZD75blue

Race Director

Joined: Nov 2000

Posts: 16,416

Likes: 1

From: NC,USA

Spike:

Do you have a picture of this X brace? I know they put a bunch of stuff under the dash on the convertibles, but I haven't heard of an X before...

Jun 6, 2006 | 10:28 PM

#12

silverslashstreak

Drifting

Joined: Oct 2002

Posts: 1,818

Likes: 13

From: ar

Hey Spike, I would like to see picture of that x brace. Been all over our 73 vert for past 15 years never seen anything different under it. May be you have a optional deal.

SSS