I have a rebuilt '66 E shortblock that I decided to finish building. Pulled the new camshaft out of it to find out what it is. Besides the CMC machine brand core casting between the lobe and bearing journal, there is a number stamped in the back end. 920029. I went through all the manufacturers I could find and none of them have a sku number or part number anywhere close. Even Oldsmobile factory part numbers. What the heck is this thing? Ideas? Thanks!

 

Can you post a picture of the front, where the timing sprocket mounts

 

If there aren’t enough identifying markings, make some measurements to determine what grind it is.
With the cam out, you can measure the lobe lift with a micrometer or calipers. Then with it installed and the timing chain connected, use a degree wheel to measure the intake opening and closing points.

 

Do you have a picture of the back of the cam with the number ?

 

Post #1, 4th pic.

 

The best way to find out what you have:
1) put cam back in
2) set up a degree wheel and pointer
3) measure actual .050 opening and closing events, lift, LSA etc. using a dial indicator