or as simple as something like a loose or warped manifold...Good point! If his motor has heads that have the air bleed holes, the factory manifold hits the head under #7 cylinder exhaust port and won't seal up. Some are worse than others. The 302 heads on my 273 would probably crack the manifold if it were cranked down without grinding clearance. The Dougs D450's clear just fine!
explain "the head was already ground down" please and thank you.
They were all covered in oil, I just wiped it off to keep the mess to a minimum. The rockers were already assembled when I bought the engine, but I'll double check. I haven't taken off the rockers yet, but will do that now. If the pushrods look okay, I'll probably take off the intake before spending hours trying to get to the lifters some other way.Did you wipe the oil out of the valve end of the rockers before the video, to keep it from getting slung out? If you didn't, there should be more oil in them, I think. If you pull the rocker arm assembly off, you can then check to see if oil is getting to the head on that side. Look down into the holes that the rocker shaft bolts go into in the head. Either the 2nd one from the front or the second one from the back will have 2 holes. One straight down for the rocker shaft bolt and the other one is a little smaller and goes at an angle. That one is the one oil should squirt out of to oil that rocker shaft. The hole in the bottom of the rocker shaft should be slightly bigger at that hole so oil can get by the bolt, up into the shaft, and then thru the little holes in the bottom of the shaft that line up with rocker arms. The bottoms of the rockers have a groove in them to let the oil get all the way around. I don't think I would crank it over without the rockers and pushrods in place to see if it oils. If you have an oil pump priming tool, you could remove the oil pump/distributer drive and do it with a drill. You would need to remove all the spark plugs so you can turn the motor over by hand with the drill running the oil pump. I'm gonna quit before someone calls me AJ....lol.