Originally Posted by Camarokid30
Thats where im getting lost how do I get the compression ratio? I probably sound like an idiot but I dont want to mess something up. Im still learning
IF the block has decent bores. Order up some mid-dome hyper-eutectic pistons. Keith Black or Sealed Power/Fed Mogul. These will get you just under 10-1 compression. If you are stuck with a hyd cam. Try for something with 225-230 duration @ .050, 112 or so advertised centerline with as much lift as available. Big blocks like lift.. Staying below 230 duation lets you keep a stock or mild t-convertor and decent idle quality. Check Howards cam stuff.
Heads, properly done will cost come $$$$$. 781-049 castings are good . But, stock they have very short v-springs and the exhaust rotators have to be tossed and spacers installed. You will need valve springs with 110-120 seat pressure. Correct aftermkt +.100 retainers and proper locks to get correct pressures, again Howards has the best/right priced stuff
Stainless valves.. No stocker stuff, BBC are famous for dropping stock valves at high speed.
Guides shortened and cut for seals.
Ask around for a machine shop that knows how to do this stuff, many have no clue..