Advice on potential gear swap

What's your cylinder pressure?
To pull 2.94s off the line, yur gonna need a lotta pressure.


I have a similar cam in my 360 and it likes a minimum of 180psi for bottom-end torque and a starter gear of 10>11:1.
IDK what a 4.20 ratio Second gear is except maybe a typo, but no matter,
IMO
2.94s are gonna suck with your combo.
I mean suck at take-off.
By the math, 65 will be around 2380 at zero-slip, maybe 2500 on your tach. So you can tune the ignition for that. So that end is fine.
But take-off is sure to be a lil soft