1974 Dart 440 tuning help

Yeah, those all in by 2500 deals may as well be locked out.

My issue is how much power it costs by locking out the timing. It’s HUGE. If for example I put a curve on a distributor that was locked out and gain 20/20 or 30/30 totiming would be rque and power that tells me that’s how many horsepower the engine was unhappy.

I used to be a lock it out guy. Then I got an education and I almost won’t do it any more.

What RPM's would you be seeing these increased numbers? What RPM are you starting these pulls at? Obviously the numbers you are seeing improved are under the curve, since timing would be all in by peak HP RPM, maybe not at peak TQ RPM.

Usually on a dyno I start my pulls between 2500 and 3000 and end them 250-500 past peak HP. I'm curious wat you are doing