Here's a link to Eric's video discussing the details of the new cylinder head he's helping Promaxx develop. Looks to be promising. These should work very well for a stock displacement 440 or 400 Big Block. I'd even be tempted to try them on my 505 vs the TF270's I've been eyeballing,just for the fact that he's keeping them much closer the the "Standard Port" size. I could retain all my current top end. Thoughts ?
