It should work well.
SBC timing should be set at about 6-8 degrees advance with the vacuum disconnected at idle, about 600-800 rpm
yes but it has to be 83 or newer
Oil pressure should be 40 to 50 psi
its about 350
No. Standard 350 engines have 4.00" pistons, standard 400 pistons are 4.125".
The spark plug gap for an AR135 spark plug on a 350 SBC should be set at .034 inches. This is equal to .86 mm so a spark plug set to .9 mm should work correctly.
The main journals need to be turned down.
It depends on the cam.
There are none.