Originally Posted by polyspheric
The nominal journal overlap width in inches (as calculated by the conventional method) is reduced by 25% (.6875" vs. .5200").
However, GM and engineers use the actual intersecting area in square inches, which is a "lens" rather than a line, to compare stiffness. The math is very annoying (see the actual calculation here: https://mathworld.wolfram.com/Circle-CircleIntersection.html, and my remarks here: http://victorylibrary.com/mopar/journal.htm), but for this example the journal areas are:
Stock: .822"
Offset: .534"
Loss: 35%

Spending $$ to offset grind a cast crank would be false economy. Your best bet for a cheap build is use stock replacement parts (rods pistons crank) so you can skip balancing and expensive machine work. If you
can find proper compression stock wieght pistons they will handle 500 hp.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky