Re: Question on my 1937 Twelve's Engine Number

Posted by Owen_Dyneto On 2014/5/2 22:22:57

What you describe was notably practiced by Chrysler Corp., especially in the L-head 6-cylinder engines in the lesser makes like Plymouth, but I rather doubt Packard did it and I've never seen evidence of it. I certainly don't have a full list of engine suffixes and surely don't have the one in question, but I have quite a few and in every case except one (oversize valve guides in the 22nd series) they identify running changes; for example to cam-ground pistons, to autothermic piston struts, to larger oil pans, to cast camshafts, to an alternate clutch vendor, changes in the alloy of bearing metals, etc.