I have a 69 440 that is fairly stock. It has a few updates/upgrades including an electronic ignition, Hughes camshaft (basically an upgrade over stock HP camshaft), forged pistons (flat tops) and Mopar dual plane intake. It runs stock exhaust and carb. I had it out for the first time in a couple years last night. I put fresh fuel in it (pump gas - 91 octane) and I added a container of octain booster. Still, it detonates when I accelerate. I have not checked the timing on it yet (I know, I need to do this) but I would think if I had it advanced too far that it would crank over hard - which it does not. Any suggestions would be appreciated.

Thanks,

440 4 me