Put my new 36" IROKS on the rear last night, and it looks like they still may rub. As near as I can tell, the frame is 8" higher than it was stock, is this normal, or are these Chevies collapsed?

Are you running blocks on the Chevy's? Cannot answer anything about rears up front!!!

No blocks.

This is how mine sits

and a more recent pic

Every one I know that runs Chevys run at least a two inch block or they build their spring perch up two inches.

Here is good info on Chevy springs;

http://www.pirate4x4.com/forum/showthread.php?s=&threadid=20665

http://home.4x4wire.com/erik/4runner/rear/

i didnt use a block in mine? i used sky's kit to mount them

i didn't use blocks either, i had chevvies in the rear and dual-shackle setup with the stock chevy shackles
and some extended shackles from 4crawler. i think i got like 2" out of them, maybe more.
i ran the 1.5" bj spacers up front and had some foward rake to it.



if you look close you can see how the shackles were set-up. i loved the chevvies. if i ever ended up doing a sas
i would've put some blocks like one or two inch. blocks make me nervous though. i considered moving the rear mount somehow
and using shackles to lift it instead. just some ideas <img src="/forums/images/graemlins/smile.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />

those're 34's, just for reference. and 3" body lift.

I put in 2" blocks to level out the rear because it sagged with the 4" ifs lift up front. With 2" blocks and a double shackle I'd say it had about 1" more in the rear (with 35" spare, rollbar, bumper and tools). My chevies really don't seem to like weight very much.. idk.

-Scerb

I also didn't get the lift I expected and my 36" SX's can and do rub sometimes. I trimmed out the front fender as you can see and then trimmed just a little off the back fender.

I'm still a little low on both front and back, I can still rub fairly bad sometimes.
I also used Sky's kit and don't have blocks, but I've toyed with the idea of putting some in. Sounds like alot of people do that after the chevy spring install, I might put 1" under there.
My chevy springs seem to carry the load OK. I think. Never noticed.