Hope this helps..
Crane aluminum rocker arms must be installed on the shafts furnished with the kit. Make sure the small oil feed holes in the new shafts face toward the cylinder heads and the valve springs so the bottom side of the rocker arm receives the oil first.
Install rocker arms in pairs as shown in Figure 1. Install the coil spring between each pair of rocker arms with a flat steel washer on both sides of each rocker arm.
There are 3 types of rocker shafts stands used with a Chrysler B engine, see Figure 2. The two aluminum bolt-on types require the use of spacer rings to properly center the rocker tip over the valve stem. These spacer rings are available from Crane on request.
The spacer rings are not used with cylinder heads having the rocker shaft supports cast as part of the heads. Install the rocker arms and coil springs and flat washers on the shafts and bolt the shaft down to the head using the proper clamp plates.
The flat steel washers must be used on each side of each rocker arm with either type stand.
Here's the link for the complete set of instructions:
http://www.cranecams.com/uploads/instructions/209e_.pdf
