Timing WAY off after installing different distributor.

Mike is right about the adjuster on the bottom of the Dist.

Right now you either have to much or to little timing.

Find out where your timing is at, and adjust the plate accordingly.

There is a special tool for this, so you can adjust it while it is installed.
If you don't have the tool, just pull the dist.

Make sure you install the dist on the right tooth. It's very easy to install it being off a tooth.