Just did Heads and cam swap. Still tinkering with cleaning up headbolt holes as I’m paranoid about them and buttoning up everything but I installed a new oil pump and I entirely forgot to pour some oil into the pump before I installed it..So caught up with making sure I didn’t drop that dang bolt I entirely forgot. So I’m wondering if I can take oil pressure sensor out of back of valley and pour some motor oil in and if it will make it down to the oil pump? or am I just over worrying about this? Timing cover is already on and sealed up so Im kind of looking for a hack of sorts. Idk if I can get to plug on side of motor like the melling pump video explains due to pulley brackets and space. Or should I just not worry about it and crank it until pressure builds? also it’s a 2000 ls1 and the O Ring I pulled off of tube was red and thicker but o ring I put back on was blue and a bit smaller. But from what I’ve read that is the correct o ring. My pickup tube is not recessed.

Here is what I’ve done/would do. Find a gear oil bottle cap or similar. Make sure it threads onto a 1 quart bottle of your favorite engine oil and also have a 1-2 ft long piece of 3/8 fuel line. I would then pull the front galley plug on the drivers side of the motor and thread the fuel hose into the galley hole. I would then take quart of oil plus cap and stick into other end of hose and push oil into that galley. That will effectively prime the pump.

When 1 quart of oil has been spend remove hose and reinstall galley plug with thread sealer on the threads to 44 ft lbs.

I was kind of under the assumption that doing that way the oil had to be pressurized by their nifty little oil primer that’s over 100 bucks. But alright sounds good. I have this cheapo gear oil pump That will probably work good. Thanks man I’ll try that

Yea I have a light coating of redline on cam. And morels were soaking for a few days in oil and put in trays right out of oil so they should be pretty wet. After putting heads on I planned to leave valve covers off and pour oil across rockers and springs right before startup. The dry cranking i don’t understand so much solely because the time of slow cranking it takes. I’d think any assy lube would be long wiped rather than just firing it and having pressure in a few seconds. But I will definitely attempt to get a quart in through the front galley and see how much I can get into the pressure port. Thank you guys

I never fill my pumps. After assembly on a build, I prefill oil filter...which I always do, every time I change a filter...and just before the oil pressure sender goes on, which is last thing I do, I force squeeze a quart of oil down the oil pressure sender port. This will make its way to the pump. It takes a while so be patient. Then When I’m ready to fire it, I spin engine over WITHOUT spark plugs in for 10 seconds. This pre-primes oil pump, and allows all air bubbles in the fuel rails to exit through injectors. I ALWAYS have instant oil pressure at first startup using this method.

Can’t beleive I paid 50 bucks for a thread chaser.. lol but made me feel comfortable hitting the final torque value. For me I’d rather know it’s good and have piece of mind.