Rear suspension bottoms out

[1coolZ71]

I have a 79 T/A with the WS6 package. I put a new set of 4 leaf, 126lb Eaton springs in the back. I also put new springs in the front. I still was bottoming out the springs in back on larger bumps. I put a set of overload springs on the shocks and fixed the problem temporarily. Could I have missed something that would cause the rear to bottom out? The new springs have no arc in them with only the weight of the car and sit exactly flat.

[Injuneer]

Did you replace the shocks? That's what helps slow down the compression of the springs. Do you still have the jounce bumpers in place in the back?

[1coolZ71]

Yes, Shocks, all the rubber bumpers and bushings, a complete rebuild of the suspension.

[Mark B]

Loose some weight. haha

Just re-read the post.

Im not sure what they are called. but on my truck, at the end of the leaf spring, there is a coupler/shackle that connects the spring the the frame. Does your car have these?

[Trash man]

Loose some weight. haha

Just re-read the post.

Im not sure what they are called. but on my truck, at the end of the leaf spring, there is a coupler/shackle that connects the spring the the frame. Does your car have these?

all leaf springs have a shackle unless its a "slip type" but i've never seen the latter on a car

[Injuneer]

Time for air shocks or an airbag kit. Springs sound like the spring constant is too low.