Home page

C4 Body

C4 No-Flex Frame Stiffener Bar System (1/4)
 2/9/14 4:13pm
Standard Member
Send Private Message

Joined: 12/2/2011
Posts: 23

Has anyone installed this system? I read that it was developed by Gordon Killebrew then marketed and sold through Vette2Vette. Looks interesting, but the 499.00 price is steep to try it...wanted to know if somebody here has already done the modification.

Our Sponsors help support C4VR
Sponsor Ad

Re: C4 No-Flex Frame Stiffener Bar System (2/4)
 2/10/14 7:04pm
Standard Member
Send Private Message

Garland, TX - USA

I have a 1991 Artic White, Red Interior convertible, 30,000 miles on it, & a 1993 40th Anniversary with 50,000 miles on it

Joined: 1/1/2013
Posts: 37

   The C4 was "Cutting Edge " when it left the factory in Bowling Green. I can't imagine needing a frame stiffener on either one of mine. And I am a tight wad when it comes to cash. When this guy developed this stiffener, was he daily driving his C4 or racing it?.................
Re: C4 No-Flex Frame Stiffener Bar System (3/4)
 2/10/14 11:38pm
Adams' Apple
Standard Member
Send Private Message

Duncanville, TX - USA

1985 Coupe-L98/Auto,Bright Red/Carmine. 1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.

Joined: 3/18/2009
Posts: 2135

Looks like a fancy "upgraded" factory "X" brace, originally used on the convertibles.You can prolly buy one of the GM braces for less than $500, and it bolts right on. The factory piece WILL inhibit access to the trans pan, and driveshaft, but it isn't that hard to install/remove.

vette2vette frame stiffener

Joel Adams  
My Link

(click for Texas-sized view!)             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Re: C4 No-Flex Frame Stiffener Bar System (4/4)
 2/11/14 2:46pm
Standard Member
Send Private Message

Frankenmuth, MI - USA

1991 Steel Blue ZR-1 1991 Callaway Aerobody ZR-1 1993 Callaway 40th Anniv ZR-1 1998 Pacecar 2003 50th Anniversary Pacecar

Joined: 1/6/2013
Posts: 14

This is designed for racing. A stock C4 does not need the frame stiffened. 
However with that being said, there is currently about an inch of flex when you lift the car without the top being installed.

Robert J. DeMarco
1998 Pacecar Original Owner Stock
1993 Callaway Ruby Red ZR-1 #219
1991 Callaway Aerobody ZR-1 #1026 Purple Pearl Mist 
1991 Shinoda Aerobody ZR-1 #1696 (Under Construction)
2003 50th Anniversary Roadster Pacecar 
1990 LPE ZR-1

ZR-1 Registry Member #1393
NCM Lifetime Member #2551
Pacecar Registry Member
Grand Sport Registry Lifetime Member