Denny's method is best here and will eliminate those pesky back fires thru carb or knocking starter Bendix or ring gear teeth off--------

But a little additional tip for wantabes---------put the engine at #1 on compression stroke( Not cam overlap position)------look at bottom of dist shaft to see where the notchdrive tab (GM/Mopar apps-Ford uses hex shaft) for the oil pump is orientated, and which way you need to lead it for the gear tooth angle, use the big flat blade screw driver for turning the oil pump drive shaft to a position with a little lead for the position the dist will be in located with the vacume advance in correct oem position, back the dist shaft off the amount of angle of half gear tooth , and lower dist straight into location so that rotor will turn to #1 wire location as installed-------a little wiggle may be necessary--------lightly tighten hold down clamp just enough to allow you to be able to twist the dist with some resistance,now back crank up to the desired initial timing number, adjust dist to where the points are just starting to open or if HEI to where the relucteris centered on the pointed part of the wheel-------install cap and wires(correct rotation and firing order is an absolute requirement), prime carb (Float levels and fuel pressure correct)--------start engine--should fire off within 2 complete rotations and idle fine--------yes , it takes a little practice doing this and being very precise with your methods, but, it your working on someone elses stuff day in and day out, you can't be sloppy about how you do it or how long it takes----------oops, they just called your class to the line and I hope you did a good job of setting the valves when you put the cam/heads on--------