The head on the right side only showed low compression and after removal the gasket was leaking between 3 & 5. Head was checked and no cracks as it never overheated.
Yes, crate is $4,800 plus labor. New 36K or three year warranty. GM service advisor says the worm gear worn probably caused the # 7 to get metal in the oil intake of the bottom rod cap and in the bearing area. He also advised not to touch the other rods while pan is off. With 3 & 5 not firing, due to antifreeze in chamber for the half hour after getting fuel, as the valves probably were open and engine hot, may have caused the #7 to do all the work turning the crank in that end position. Possibly spinning the bearing thus the tick, then 1000 miles later the knock as it was out of position. Pure speculation from a subjective analysis which will be confirmed or denied by Objective look see. So if it is fixed the GM man says it's low mileage does not justify the replacement. So it's a gamble, but $3,000 V $8,500 go figure.
As to the oil pump check, yes we will do that, but screen should have got most and it's oil pressure is fine.
