I deleted my first post in this thread to prevent future confusion.

The 839910 is a good USA number and it does show up in my 1929-51 Chevrolet Master Parts Book. It lists it as a 1942-47 216 Block and also lists 839770 as a 1942-47 216 Block.

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD