Timing

I doubt it. In most cases you want less timing at peak torque and more timing at peak power.

If you make peak torque at say, 3500 (that’s probably a bit low but that’s a close guesstimate) and you have your timing all in by then (or if it comes in even earlier than that) you are killing power at peak torque.

With your cam I would guess (at least as a starting point) 18, maybe 20 initial and by peak torque I would be around 24-26 and once you are past peak torque you want the curve to gain 1.5-2.0 degrees per thousand RPM. So that would mean at 6000 you should be 31-33 total.

If you are using a Chrysler distributor you will need to reduce the weight of the weights to slow the curve down, otherwise you will need to use springs that will close a barn door to get the curve correct.
Thanks for response. This RV cam makes power off idle and it is done at 4800 w/355 gears I'm in second gear in what seems like a blink of an eye. Before the fbo plate I was at 15 initial and 38 total the total on the plugs looked good but the idle was dirty, so 20 was where the vacuum stopped rising.
I think I'll try the next stiffer spring tomorrow. Btw I loved you in the movies brother!