[skymangs]

Now you are ready to position your driveline. Generally, the farther back you can get it, the more room you'll have for your fan setup. I set 4.3L and 5.7L engines about 5.5" back from the factory mounts. I've attached a quick drawing of what I build for motor mounts. I use 3/16 wall 1/2" I.D. tube and 1/4" plate steel for the uprights. I cut the tube and bolt it through the mounts. I then use my hoist to position the engine and trans as close as is reasonable to the firewall. I have a large box full of 4x4's, 2x4's, 1x2's, and shims I use to block the motor, center it, and level it side to side.

Once the motor is in position, I make poster board templates for the "legs" of my motor mount pedestals. Then cut them out and tack them in place. I then pull the driveline so I have room to seam them in properly.