Originally Posted by old sarge
the engine number in my 51 Chevrolet pickup is JBA579300, the number on the door post reads 6JPH12648 best I can figure based on the information sent to me is that both numbers are 1951 and a match(I hope),maybe one of you Gents can expand on this? Thanks Old Sarge
What, do you want expanded, Old sarge?

Your Serial Numbers "numbers/codes" match.

http://chevy.oldcarmanualproject.com/chevyresto/51053.htm

Engine Serial Number: JBA 579300
JBA = 1951 3100 216.6 ci engine assembled in Flint, MI
579300 = 578300th engine out of the Flint, MI engine plant that in 1951

Vehicle Serial Number: 6JPH12648
6 = Oakland, CA assembly plant
JP = 3100 series
H = August 1951
12648 = 11648th 3100 out of that plant in 1951

If you want to check other numbers (for matches), here are locations of other casting codes , including head and block date codes. The date codes should be earlier than the VSN. Then, you will have more matching numbers.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.