I am embarrased to admit it but I am having trouble with identifying the exact specs for this 390 block.
#3190808- book says "232/390 64-71" ...doesn't mention head bolt size 7/16" or 1/2" or deck height. I'm not sure whether it is the early or late block. Obviously it is the 390 I'm asking about, not the 232 that also apparently shares the casting number
These are the other 390 numbers:
#3190806 is 68-69 390 7/16" head bolt 9.175 block
#3195529 is 69-70 390 1/2"head bolt 9.208 block
#3195528 is 70-80 390/401 1/2" head bolt 9.208 block
Thanks,
George