nos on a 318

I'd start out with a 125 shot to get it dialed in (after follwing Cracks' recommendation to optimize performance before stepping up to NOS.

If it were me, knowing how tough, and cheap, 318's are to build, I'd work on up to a 250 shot and stand on it.

Also, if you do get serious about NOS, MSD sells control boxes that allow you to automatically retard timing with rpms. Doing so prevents lean out and will result in better top end performance.

Have fun and let us know how it works out !

Southernman