have a 312.
 block #ceck plus6015a what is the vintage
heads  #6090 /eczc with 1.9 intake valves,but have large corplugs at end.
though  i was buying a 292, and got lucky
thanks for any help

http://www.ford-y-block.com/technical.htm

CECK Canadian 292.  If yours is a 312 and it appears to be factory, then perhaps they were also machined as 312s
ECZ-C is a '56 head, which must have had bigger intake valves fitted


Lawrenceville, GA

all canadian 292 and 312 were CECK

thanks for the help