time to fire big block.

Pull the heater hose/ fitting below the T stat to be sure you fill it without airlock.

Be sure to get the timing right, do you know how to do that and sure to get the dist on the firing stroke for no.1?

With a flat tappet cam, you want to be able to get right up to cam break in RPM without screwing around with other engine problems

Remember that the dist rotates CCW in a B/RB. If you prime the oiling system, I always start with the filter removed, and a can below the filter mount. Pump should prime in 1-2 or maybe 3 seconds on a drill. Be sure to rotate the engine so the cam oiling holes to the rockers line up