While you've made some good points, Goatman, Larry never says that D-ports are the way to go, with no exceptions, if you're seeking Butler type power or 8s or 9s. He says they can make a Pontiac haul. True, they can. Keep in mind, the E's have only been around since about 1994. People were running well with Pontiacs for those 30 or so years you mentioned.
E-heads, however, can and in many cases, have made it easier to go fast. When you run 10s, you can achieve that with Ds, Es or round port iron. Your car runs 10.60s with Ram Air IVs which is great. Some other people can't run that well with Es or D-ports with similar parts as yours. Your combo likes the heads you've chosen. It is possible (stranger things have happened) that you would slow down or run the same with Es. As you know, flow is important but so is velocity.
The combination of parts and not just the heads is probably most important.
|