Here is a Google Sketchup of a Crib Block I plan to use to support my floor jack(s) when raising the van.
Crib 4 Hyd Jack Assy.png
Here is messy assembly of a crib block for supporting the van itself
Crib Block Assy.png
I have drawings of the components themselves and will post them if there is any interest.
The idea isn't mine. It came from this webpage:
http://www.myturbodiesel.com/1000q/multi/wood-block.htm
I plan to use the idea with this other idea I found on this forum.
http://www.automotiveforums.com/vbul...+near+radiator
My van has a blown head gasket or the intake manifold needs replaced, again. So I'm considering raising the van and dropping the motor from the bottom. Haven't done it yet.