Advice Needed - Can't Start Rebuilt 273

[When you adjust your valves do as 66fs but instead of adding .002 to the cold tolerances you`ll want to subtract it. ] No this is incorrect. As the engine heats up everything expands and your gaps shrink, even more on the exhaust valves. Also you can adjust the valves with the engine running by using a swivel socket on an extension if using stock 273 mechanical rockers. I've done it too many time to count. Some one suggested using wire in the spark plug hole to get close to TDC. Sounds like a fine idea if you don't have the right tools. Don't feel bad either. I have a scar under my chin from a breather cap after a crankcase explosion trying to get a 273 to start 180 degrees out.