After third try, LS3 STILL won't go in

[Mkelcy]

Originally Posted by absinthe

use the preload plates! without them the poly will literally come apart on the first rev.

I was having the same problem with mine and here are some of the solutions possible to you that I tried:

1. Energy suspension makes an adapter plate kit that is the mount and adapter plate. Thay are built without the preload plate and "skinny" up the mounts.

2. Check to make sure you have the right ones---there are "tall-narrow" and "short-wide"

Why wouldn't the solid aluminum adapter plates provide the same preload as the preload plates?