The edelbrock performer 350 crate engine has 310hp/375ft-lbs. So if you have the same cam, compression, etc., it should produce close to that.
10-12 degrees
edelbrock has a square flange gasket fo it
The torker 2 is a single-plane design, so it won't work as well as a 2-plane such as a Performer or Performer RPM.
The Edelbrock carbs work very well right out of the box, so if you have the correct intake manifold it should bolt right on with no problems. The Edelbrock website has all the info you need for tuning and connectivity.
17-22 Hg
Chevy 265, 1955 -56. Want to sell it?
25 ft./lbs.
Hard to say, they have several intakes and carburetors for that application.
I've had good luck with the Edelbrock 1406 right out of the box.
The Edelbrock Performer and Performer RPM would be good choices. Also there are a couple Weiand dual plane intakes that would work well.
For an 85 Chevy 305 engine, a common choice is a 600 cfm Edelbrock carburetor. This size provides a good balance of performance and drivability for a stock or mildly modified engine. However, if you have specific modifications or performance goals, you might consider a slightly larger or smaller carburetor based on your needs. Always ensure that the carburetor is compatible with your intake manifold and other engine components.
If it is a stock motor then yes it is. 600 CFM carburetor will be just fine on a stock engine.