I posted a bunch of Info on my 505 build using the 4.25" stroke, 7.1" rod kit in a 440, and also using the Stealth heads. For the most part the kit was good, but had one rod where the notch that locates the bearing was a bit off, and the bearing was touching the radius of the crank, the result (indicator) was tight rods side clearance. I just chamfered the bearing slightly and it was OK.
Here is a link:
https://board.moparts.org/ubbthreads/show...part=1&vc=1I also have a 440 source 4.15" stroker kit in a 400 block, and I have not had any problems with the 440 source parts, but the Edelbrock Victor heads have given me problems.
