1973 360

I used to race a 75’ 360 in a Demon years back. Earlier ones had core issues.
Anyhow- flat top pistons and build the cam for the exhaust side. They need more exhaust valve open time. 2.02 intake and 1.60 exhaust valves. Nothing special. Early 80’s I was getting over 400hp and like 439ftlbs of torque. Back then every one thought of them as “truck engines.” Lol!
They love the thermoquads too.