Hey Mac,
There is a book available about this. Check out California Bill's speed books through Motor Books.
Chevrolet Inline Six-Cylinder Power Manual
Leo Santucci
Everything the engine builder needs to know to rebuild the Chevy for power on the street, strip or other racing applications. Covers 194, 215, 230, 250, 292 passenger car and truck engines.
160 pages, 8½" x 11"
ISBN: 1-931128-15-4
Try this link.
http://www.californiabills.com/(You might have to copy and paste it)
Good luck
John