3902406 big block

[BARRY]

HI does this block take a rear grooved cam bearing THANKS

[WILMASBOYL78]

The 406 block was new for the 67 model year...though some late build 66 cars may have used it. According to my research this block did not utilize the grooved cam bearing journal feature...

http://macswebs.com/cddemo/67cd/etr/engines/block.html

-wilma