got a 00 'vert with ProKit (1 1/4 drop when installed, have not measured since)

still running stock SS shocks.

and I can only get one finger under the bump stop, so I got an extra pair today.

how much can I cut out of the bump stop, before the rear end hits something else?

 

i just took mine out altogether!
very very rarely does it completely bottom out (maybe twice in the past 3 years), and i even have the Eibach Sportline springs

 

tks for the response!!

i just wanted to make sure the driveshaft or something bad did not contact and make me say DOH

unfortunately, it's like ~40 degrees out in the garage, so I'll try that tomorrow

 

Do not take off those rear bumpstops. Looks like you have an SS.... Simply take out the aluminum spacer that's between the body and the bumpstop. That will gain you about 1" of extra travel back.

Bumpstops are there for reason, the car is not meant to be without them. Not having them can cause lots of other issues. There is nothing to stop the axle for eventually hitting the body of the car except for the shock (which is not meant to limit travel).

Also the rear stops are extremely progressive and not extremely stiff. Cutting them makes them less progressive, so when you touch them you'll get a bigger spike in spring rate.

 

 

Um, okay......

I suppose they are just another thing that those kooky engineers install for fun, right?

For the record, you should know that stock height cars contact them normally enough that you can see where the bumpstops rub the axle housing. Lowering the car will make this happen more often.

If you don't have a bumpstop to hit you get all kinds of not so neat-o axle articulations.... Given that the panhard bar and the lower control arms mount to the body, and can't move, that makes the axle move through arcs as it travels up and down. The down is limited by the shocks, the up by the bumpstops. Take the bumpstops out and now you either A. hit the axle on the body, or B. bottom out the shock which will break it.

 

um!
mine was "only" a suggestion !
i didn't realize he had an ss, which would have the spacers!

 

Not to mention when the axle bottoms out the wheel rate goes from whatever it was to infinate in a split second. Snap oversteer anyone?

GM does not spend money to develop and produce parts without a good reason, removing them without considering the consequences is never a smart idea...

 

it was "ONLY" a suggestion!!!!

damn, get a clue !

 

It's all good..... Just misunderstood your dude!

Sam

 

I removed mine too. The problem is that coming out of a corner the rear swquats down alot. This helps to take weight off the front which of course makes it push.

It also allows, like Sam said, the axle to rotate more than intented. This will create a roll understeer condition that is excessive.

I say drive the car around and see what you think. Take out the spacer first of course. Then if it seems to be bottoming on the stops alot you can trim the whole thing. Meaning take 1/2" off the length and 1/4" off all sides. This should help it maintain its progressiveness. Or drill about 3 3/8" holes all the way through it to soften it up.

BTW Where can new stock bump stops be purchased? Will a dealer be able to get them no problem?

 

i got mine of f a wrecked car, they are about shot.

i like your idea of trimming the edges to maintain progressiveness.

we don't SCCA anymore, and there are no turns in the road down here. so all that is no concern.

there's just lots of railroad tracks where they bring stuff onto the Submarine base. all the 'necks have huge 4wd's; so no use to fix them, huh?