I have used as a reference for replies, not having any ( none ) personal expertise, the book published by CarTech and written by George Reid, Los Angeles CA in 1998: High Performance Ford Engine Parts Interchange 221-CI to 460 CI
George's background is not indicated. In the Acknowledgment Section , George mentions the following as having provided assistance with the publication:
* Jeff Sneathen: SEMO Classic Mustang
* Sneathen Enterprises, Cape Girardeau,Missouri
" Each ( above ) of these gentleman allowed me access to one of the most extensive collections of Ford high-performance parts in the world "
* Andy Leeka, Andy's Performance Enterprises in La Verne CA
" Access to one of the most extensive warehouses of Ford performance parts around "
* Dr John Craft
" a respected Ford and NASCAR journalist and historian , he made his extensive archives available "
Not passing judgement either pro or con on the creditability of the publication, but it does appear to be one , of many, resources for detail information and history on Ford SB and BB engines. A number of the points mentioned in this Thread are included and explained in the narrative which accompanies the numerous data charts, graphics and pictures.
http://www.cartechbooks.com/vstore/w...6&WebPage_ID=4
If the above link does not work, Car Tech has a search function by book title, which is also available by Chapter @ $4.00 per download. Big Blocks have 10 chapters , from page 80 to page 146. I bought my book at Amazon.
http://www.cartechbooks.com/vstore/h...?CID=2&DS_ID=2