I'm fixin to fire up a brand new eng. rebuild on a 73 240 and I'm trying to figure out how to or if i even need to prime the oil pump its new also. any ideas? Also whats the best way to verify positive oil psi before I start it up.

Edited August 6, 201014 yr by rd.stick

Be sure to pour a quart or so of oil down the camshaft to get it lubed prior to cranking. I'd pull the coil wire and crank for 15 - 20 seconds to get oil flowing in the passageways before lighting her off.

If you used assembly lube on the build I wouldn't be too concerned about a dry start. I would remove the spark plugs and fuel line to the pump and let it crank for about 30 seconds. This will pressurize the oil system.

Thanks for the responses I finally just pulled the pump and filled it with oil for a prime and that worked fine thanks again.