This camshaft needs a 3500+++stall converter and big gears.
Lock out the centrifical advance curve in the distributor. This cam wants full advance at idle.
So much so that you do not now need a centrifugal advance curve.
The fix is to eliminate the centrifugal advance curve.
Locked out fixed timing will work best. 36deg BTDC .
36deg is 1/10th the way around the balancer from TDC.
A dual plane hi rise , like the Performer RPM will make a lot more low end torque than the torker II manifold.
Start by locking out the distributor. The low end power and response will be a whole lot better.
Be sure the starter motor support brace is installed.
It will be a whole different motor.
If you don't want to run a 3500++ stall and big gears get a much smaller camshaft.
And a dual plane intake manifold.
The HEI is easy to lock out.