Rear Lowering Bolts

[WVZR-1]

Originally Posted by randy ransome

The top Part No. is the Bolt. The bottom No. is the nut.

I believe that what you bought were 5/8 and NOT 9/16 and based on the fact that the OE bolts are really M14-2 X 225 the 5/8 are maybe a stretch and to be considered a "no fit". I've never tried a 5/8 but I have 9/16 and I'd think (it's been many years) that the 5/8 won't work. 5/8 would explain maybe the lesser cost also.

Maybe someone has a new bushing and they can confirm the diameter of the bore. I don't have one new or used.

[RussMcB]

Good responses. It's good to know the original size is 14mm, and that 5/8" and 9/16" are options.

I went ahead and ordered from a Corvette vendor. I never found a significantly less expensive alternative. Even the Fastenal PN above appeared as $15 apiece on their web site. I'm sure a more reasonable price is out there, just not worth the effort to find it.

Now I'm thinking about the next steps ...

I like Gunny's idea about the cotter pin. Good safety measure. I'm also leaning towards jam nuts. I *think* that will give a little more adjustability. Maybe even help with cross weights? I'm hoping to find that out in a week or two.

Originally Posted by Mystic ZR-1

Wouldn't lowering just the rear screw up the
balance/handling of the car?

I haven't come across any posts saying it screws up geometry or roll centers. Just not to go too far because the bump stops are abrupt.