Hoping to be brief here. Picked up a knock in 416 stroker. 1st thought it was lifters. Moved on to crank and cam. I didn't build engine. Had a pro do it 11 years ago. He and I lost file on details and parts we used. Here's problem at this point. Using crank gear with 3 keyways: zero degrees, plus/minus 4 degree options. So 3 possible positions. The Zero degree key has a dot over. A few degrees to the left (counterclockwise maybe 10 degrees) is another positioning mark (punched dot). Spent a day trying to determine manufacturer. Can't locate. Which dot do I use? By the way the gear is marked as MAP HPR-2A.
