I love American WW2 warbirds, attend a lot of air shows in my area. I have also been to some of these scale model R/C fly-ins. I came across this video a couple years ago when checking out the small radial engines. The sound this large scale P-47 has is truly amazing! (And pulling a 4-blade prop)
I don't know how to link a youtube video link from my phone, but here is the the name. "P-47 razorback moki 400 radial" It is 3:24mins. And well worth a listen.
CRANK IT UP, AND RIP THE KNOB OFF!!