I was on the Kenny Brown web site and saw their lower chassis brace. http://www.kennybrown.com/fbodylbrace.html

I am really not sure where this goes. Do any of you guys have it? Is it worth the money. Pics would be great. thanks

 

Looks like it might be a "wonder bar", connects the front frame together. They bolt in between the front sway bar and the frame. Or it might go under the transmission if it isn't a wonder bar, similliar to the G-load brace for the 4ht gen cars. If you look some more you can find a winder bar for about 40 or 50 at Global West I think.

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'86 TA, T-tops, T-5, 3.73, 4 wheel disks 350, compucam 2040, performer intake,SLP Headers, 3" race magnum muffler, 1.6 Comp rockers, Ripper shifter, perf. friction pads, Hypertech ignition, Earls brake hoses, Hotchkis springs, Tokico Illumina 5 adjustable shocks and struts, Lakewood panhard and trailing arms
14.73 @ 95... traction still a problem

 

It looks like the Wonder Bar. You can get them new from GM for like $30. I just installed a GM one on my car (after I painted it).




I also did a tech article on installing it. If you are curious, check it out. W Bar Install

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'87 Trans Am
S/D TPI retrofit including functional PassKey, 22# injectors,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--

'97 Bonneville SSE

 

That bar connects the frame together right behind the motor, it is not a wonder bar, I was wondering myself if it was worth it.

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86Z28, GM 350, Jet perf Q-jet & chip Dual snorkel air cleaner, Edelbrock performer intake, Edelbrock headers, Edelbrock cat-back, Off road pipe, MSD 6AL, Accel Super Coil, Taylor Spiro-pro wires, Rapid fire plugs, Jet fan switch, World class t-5, Hurst Short Throw Shifter, Ram Flywheel, Center force dual friction clutch,Aluminum drive shaft, BW disc rear 3.45's & a posi, PBR calipers, Earls braided brake lines, Polygrapite bushings all the way around, poly tranny mount & torque arm mount, Hotchkis lower control arms & panhard rod, Rancho limiter straps, KYB struts & shocks, Gm Wonderbar, Edelbrock strut tower brace, SSM sub frame connectors, Jamex lowering springs, Carbon metallic brake pads, Crossed drilled rotors, Mobil 1 Tranny fluid & motor oil, GM syntheic rear end oil, K&N, Grant stering wheel, 1,200 watt system, Jet Black Paint, 91 Z28 rims, 92 wing, Tinted windows.

 

I have the GW wonder bar and the KB lower chassis brace. Bang for the buck and improvement in front-end stiffness, GW bar by far. I did the KB brace at the same time as SFCs, but I didn't notice much from it. Slighly better power transfer at high revs.

Dave '91 T/A

 

Does that thing work like a STB? which is better to get. With a STB does it get in the way when working on the car? Thats my main concern! Which of the 2 would be better for me? Thanks.

 

It doesn't work like a STB. An STB noticeably stiffens the front end, improving steering response and eliminating front end movement over wavy pavement. The lower chassis brace only deals with acceleration. It prevents the tranny tunnel from flexing, improving slightly power transfer to the rear wheels.

Thanks, Dave '91 T/A

 

$100 for that darn thing. What are they thinking, it looks like it's no more than $20 worth of metal at most and maybe 15 minutes at most for the cuts and welds. $100 I could build one in an hour and probably be much happier with it. I don't understand really why we need the brace since the frame is now tied together with the firewall which is plenty stiff. Looks like a waste of money and weight. Get in order: SFC, LCA, Panhard, and a STB, maybe even a roll cage if you are hardcore.

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, Jon (91 RS too many mods to list), getting new engine in summer