I built a 4.6 stroker Jeep engine based on the 4.0 block and older AMC 258 crank. When you deviate from stock, you run into issues. I found this out with my build. Some custom stuff just doesn't work right the first time. Gotta identify the issue before you can make corrections. Just know, the pioneering efforts you're makng will become "stickies" on the sight later. Awesome work.