Bolts for a 59 AB head

[adileo]

Hi

I know to use grade 8 bolts and washers with 50-55 lbs tork on each.

I am told there is 3 difference lengths of bolts, shorter ones on the bottom row, 2nd row a little longer and the rest are longer yet. Any one have the exact lengths of the three different bolts? Also thread length & thread


Thanks

Andy