a lot of people think that peanut ports heads are great boat anchors. I know lots of people who used these heads on smaller rat such as a 396-402 and sometimes a 427. They used a smaller duration roller cam and the power and especially the torque was very impressive! I hear that using 2.19 1.88 really help this casting out and little bowl port and a competition valve job make it flow very well, not too mention the smaller port makes a lot of velocity! i honesty think a nice set of peanut port( 236 casting) that had little work such as opening the intake port entrance to a large oval port gasket size and let it funnel in to the smaller port and some bowl work and a good valve job, these heads could out proform a set large oval ports on smaller engine such as 396 or 402. what do you guys think?