as i bought a bare block to start my engine build, i have no external bolts for accessories etc. is there somewhere that will tell me what size, thread they are? bolts like sump intake manifold exhaust manifold front cover etc.
All bolts will be UNC. They will range from 5/16 through to 1/2 inch. You can either go to a wrecker and get a full set nice and cheap or simply buy the sets. These sets can be bought as head bolts, big end bolts and main bearing bolts from ARP ( recommend these ones) and the others namely water pump, inlet manifold and exhaust can be bought new but cheaper than the ARP's along with the sump and rocker cover bolts.