Slow Motion,
Where are you located? Maybe I' can see if I can put something together for you if you are not too far away. I hate to toot my own horn but to me 415 for any BB Chevy is laugh material. Maybe I can't equal that price. Don't know. Haven't built a mild 454 in a long time. If I can still get either the 049 or 781 heads, for that power level you could run them pretty much stock with some slight mods by hand but keep the little valves or go up some and put the bigger valves in it. Still even with a hydraulic cam I can see no way possible to be at 415 hp for a 92 octane engine.
What are you seeking in an engine?
Race?
Street driving? (I thought you were installing it in a race car by what I read).
I have daily street driven SB Chevys on 87 octane that are equaling that power level. Fact is I am wondering what in the world they could be doing to hold any kind of built BB down to 415 hp. I am guessing it has either stock factory rods or cheap aftermarkets? Pressed pin pistons or floating? Cast Iron Crank? Factory Steel? Aftermarket Cast Steel?
There are several engine builders here on Racing Junk. Why not at least call to Bill hendrens, or Awsome Engines (?) or Frank at Advanced Engines, or RhinoEngines and talk with Ron. See if any of them will worl you up a package in your budget range using stock block heads etc. Like I said, Maybe I can, and maybe I can't. I do know this though if you had one of mine with hydraulics you wouldn't be even touching the rockers for adjusting except maybe every once in awhile if at all.
Who knows, maybe they have a friend at the Junk Yard and can get parts cheap.
Ed