Posted for "Rhonda Bewley" <Rhonda@BPAENGINES.com>:

 Gary:
 
 
 There is a special service publication available from Lycoming that
 lists each engine model, including suffixes and what their set up is.
Find SSP-108 and SSP-204.  As far a Lycoming cores go, anything with a
 serial number ending in -40,-48 will be a narrow deck engine (pretty
 much any cases manufactured prior to 1976), anything with a -XXA is a
 wide deck, and I believe anything with a -xxE is a roller tappet, wide
 deck (but I wouldn't expect to find a lot of those engine on the core
 market as of yet.)
 
 
 
 In my opinion, you'd be better off financially to purchase a new
 experimental 360 kit engine.  There are three manufacturers of the
 parallel head 360, so the costs stay in check.  You can get a brand new
 engine, balanced and blue-printed by a reputable engine builder for less
 than the price of a core and an overhaul from a good shop.
 
 
 
 Good luck.
 
 
 
 Rhonda Barrett-Bewley
 
 Barrett Precision Engines, Inc.
 
 Tulsa,OK  
 
 918-835-1089
 
 918-835-1754 fax