Have you guys experimented with ignition timing much? While I have gone through nearly every nut and bolt on my Dart in terms of body, suspension and drivetrain, I have never messed with anything on my Magnum 300 crate motor beyond bolting up the headers and changing the oil. It runs fine, doesn't seem to ping on 87...but something tells me that the ignition timing, which I've never touched is leaving something on the table. I have a fresh distributor ready to go in this weekend...then I'll get to know my timing light and figure out if I can get any more of those (supposed) 300 horses to come out of the barn once in a while. What has worked well for you? How much timing do these motors like? I am running a mismatched gear ratio (the 4.10 was not a great choice to match with the A904 as it turns out) so some higher rpm power would be helpful.