...and non posted.  It would be nice if the heads where chamber size is not listed in Johns table would be cc'd and documented somewhere for reference.  The ECR-A's I had recently are only listed as low compression in the table without specific size, but when I cc'd them they showed 73cc chambers, which is better than many other models.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

Came across a set of ECZ-B heads. My books do not have any info on these heads. Can anyone tell me what they are? I do know they are the large valve but thats it. Thanks 

55Birdman  Hickory NC