The GP-5 being flown by Lee at Reno this year had an all aluminum small
block chevy in it.
Dry sump with electronic fuel injection. Lost a couple of pistons and had a
mayday landing.
Cool looking airplane, but too many moving parts in the engine!
Larry

If I had a $1000 for every automotive V8 ever tried in an airplane
I would be a millionaire. Hope springs eternal.

The key is spend a little time studying the strength of
materials mechanical engineering course taught in every college.

Paul Lamar

Amen!  Just finished that course up myself.
You'll need a Statics course to make the Strengths class meaningful  and a Dynamics course to make it apply to engines.

Chris Cosman
Future Mechanical Engineer, currently practicing without a license. :)