Thanks for the info guys. Right now my 493 is a stump puller, single plane, and a 260/266 cam, I'll have to dig up the dyno sheets to see peak torque RPM. Just on the fence if the trade-off is worth it, port velocity of the small ports to the flow of the large ports. Street/Strip type deal.
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater