*604 upgrades-open motor rule*
Hey guys, can anyone chime in on what the best bang for the buck would be to increase the horsepower of a 604? I run in an open motor class, so rules are not an issue. I just happen to run a 604 and would like to just build on that as opposed to starting from scratch, but it does not have to be a sealed/legal 604 by any means. I understand there is a 383 kit for the 604. Does anyone have any experience with that? I’d love to get another 100 hp or so out of it if possible, and still maintain good reliability. Any info would be greatly appreciated.