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12-11-2020
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#1 |
 
Join Date: Jan 2006
Location: Decatur, AL
Posts: 1,119
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90-91 X-Brace ZR-1?
Reading the NCRS manual, it says 90-91 COUPES all came with an X-Brace, I thought this was convertible only. Can anyone verify X-Brace on 90-91 ZR-1?
Thanks!
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Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454 |
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12-11-2020
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#2 |
 
Join Date: Jan 2010
Location: Mystic CT
Posts: 2,633
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Re: 90-91 X-Brace ZR-1?
Wouldn't be the 1st time NCRS was confused...
OBTW: How many ZR-1s have achieved Top Flight awards? 😀 |
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12-11-2020
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#3 |
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Join Date: Aug 2006
Location: McLean, VA
Posts: 3,721
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Re: 90-91 X-Brace ZR-1?
I had a 91. No X brace. Neither on a 94.
I did get a X brace, stich weld and closed it into sort of box section and had it bolted/weld & bolted on to 91. Added maybe 70 lbs but stiffened the car substantially. This was done by Corvette Masters in Maitland, FL around 1994. |
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12-11-2020
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#4 |
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Join Date: Jan 2010
Location: Mystic CT
Posts: 2,633
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Re: 90-91 X-Brace ZR-1?
Is the convertible X-brace without mods a direct bolt on?
Worth the effort? |
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12-11-2020
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#5 |
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: 90-91 X-Brace ZR-1?
That's wrong. Only convertibles came with the X-Brace. Yes they will bolt directly on to a ZR-1. We have one here locally where it was added. Yes, they do help stiffen the car.
H 
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. Last edited by Ccmano; 12-11-2020 at 07:01 PM. |
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12-11-2020
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#6 | |
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Join Date: Aug 2006
Location: McLean, VA
Posts: 3,721
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Re: 90-91 X-Brace ZR-1?
Quote:
If I remember correct, front there is a threaded hole ready for bolts. Rear, required captive bolt or nut welded on. OEM x brace is stamped member and not that strong. I had the shop close it off with steel sheet. Can?t remember the gauge. |
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12-11-2020
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#7 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,166
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Re: 90-91 X-Brace ZR-1?
I have the vette2vette no flex Prototypes on my car still. They work Great
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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12-11-2020
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#8 | |
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Join Date: Nov 2016
Location: New Brunswick
Posts: 960
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Re: 90-91 X-Brace ZR-1?
Quote:
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1990 ZR-1 # 996 "All Corvettes are red. The rest are mistakes." - John Heinricy |
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