BTW Owen. I just found the 55 SC's. They were right there with the 56's all along. The index for the 55 and 56 SC's indicates only "Page 36" for any reference to the "3" vs "4" cranks. I'll look further thru them.

Between my two 320's, I have both the cast dome and the machined versions. I'll have to check tonight to see which one's are on my Patrician, but if I remember right, it's the machined ones. I also have a crankshaft that's out of my parts 320 that's been machined already, I can also post a pic and note the #'s that's on it. BTW, I also have the 374 that came out of my Patrician at the house, I can look for #'s on that crank too, but since it's stuck, it may be on the "back" side of the crank and I won't be able to see them, no promises there.

I also have a connecting rod from my parts 320, I'll post the part # from it, too.

September 8, 1947: Packard introduced the Six 2220 and 2240.
The serial number is in the range of G1501 to G4100. Both of those models were produced for taxi use.

The Taxi limousine with a 2280 body mounted on the 2200 chassis which had a wheelbase of 141 inches,as did both body style 2282, a four door sedan, and body 2296 a four door sedan taxi.

John F. Shireman

"Then there is a subsequent notation relating to the first that says the crankshaft with the #4 stamped may be used for either the 4 or 3-13/16 engine, but those with the #3 can only be used on the 3-13/16 engine."

This COULD very possibly mean PISTON to C'Weight clearence or some other clearence issue.

Also note:

Insert Main bearing material is different for ONLY the 320 front 4 mains. See service manual 55 and 56 engine specs at the rear of the book for details.

Would this raise any suspicion that maybe the 320 crank was cast of different material from all other PAcKard V8's????

I do not have 55 SC's. Only 56's. I'll download the 55's later on.

I have cyl. head 440689 cast on the exh. port. Dated 5 27 55 on top deck of head under valve cover. A "3" is also cast just above the date. The head is real cruddy but appears to be original paint and is either white or Ivory. I have the mate to it too but have not checked it yet for numbers. History of heads UNknown.


I checked 3hree of my cranks. NONE have any "4" nor "3" on the front weoght that i can see. All 3 cranks have a "TT" STAMPED on the machined flat of the front counter weight. One has an "E" on the machined flat of the opposite side of the front weight and a dab of either white, lite beige or iviry paint on the front counter weight.. So these would all be 56 cranks???

Pics on request. One of the cranks is from 5672A 1834 with engine number AND vin stamped at the front by the oil filler.

Gentlemen, this is the document you seek (link to complete document pdf):

https://www.packardinfo.com/xoops/html/downloads/SC/SC-VOL29NO7.pdf

As Brian said, stay tuned as his excellent research is coming together with my "web-kung-fu" to bring you a very easy new feature for the website to help find, and access these types of service documents.

Attach file:

---

  (22.25 KB)

One thing that most is most puzzling to me about the evolution of the the second Packard Twin Six. With all the experience that Packard had in building all kinds of engines.

The basic design of the Twin Six came from an outside source hired by Packard. The basic design of the second Packard Twin was done by Cornelius Willet Van Ranst.

John F. Shireman

Randy,

Great to hear fire-up went well.

Pete,

I didnt do anything with your previous username, and I never received any emails from you. So not sure what email address you using for me. It should be bigkev@packardinfo.com

Can you just not login using your previous account?