Posted Byrob on September 07, 2002 at 06:05:06:
i am selling a 400 4 bolt block it is a 1972 casting and is a factory 4 bolt..the caps a the letters NF on them i sent it to the machine shop and had it clean and checked for cracks..this is a good one..i paid 250 for block and a 150 in machine shop..will let go for the 400 i have in it..if interested just email me...