New C4 Frame Braces

[secondchance]

Originally Posted by HIZNHRZ

So are you pretending you did not receive the information; or, are you only pretending to share the information here?

All kidding aside, there isn't much on the vette2vette web page. With my targa top off, my otherwise solid Z suddenly feels and sounds like a rattle trap. Unless I'm imagining things, with my eyes on the C4 A-pillar, my hands on the wheel and my *** on the seat it looks and feels like the front end is moving independently of the seat I'm sitting on. If I goose the accelerator in first or second gear, I can feel the steering wheel pull. With the top in place, the car is tight and does not rattle or pull.

Jeff, did you experience any of what I'm describing with the top off before the frame braces were installed? Do the frame braces only improve the situation or do they make the car feel like it did with the top in place?

Any information would be appreciated.

Scott,

My first C4 was a 84 4+7 manual with Z51 suspension. With the top off, over the railroad, I could see the steering wheel move laterally by about half an inch!
GM upgraded "K" member around 87 (I think). That reduced lateral shift by 1/8 to 1/4" - depends how bad the undulation is.
My 91 Z, I had "Corvette Master" in Casselberry, FL, take an "X" member (sort of a c channel) for convertibles and stitch weld a plate effectively creating a box member. Front of coupe has a bolt hole already (I think). For the rear, Robbie had to drop a bolt into a plate and weld the plate to the bird cage. This worked real good but added some weight.