1953-1966 Nailhead info: Casting numbers & engine codes

Big block and small block info will follow soon...... :TU:

 

Great job EriK!

My 65's original 401 block has 1364705 casting # on it. You listed it in 425 block casting #. The Buicks.net website did the same (listed for both 401 and 425) but it's apparently a 401 engine code, not 425.

 

Maybe this will tell you to pull a head and measure the bore at one of your cylinders :bglasses:

 

Look at this thread.

http://www.v8buick.com/showthread.php?t=58210&highlight=1364705

 

For the nailheader this is great information.
Thanks for a job well done

Jim Schilf
palbuick