It depends on the year. In the mid to late 80's, GM started putting Chevys in a lot of Buicks, Pontiacs, and Oldsmobiles. Check your casting numbers to find out for sure.
If the Buick 305 is really a Chevy 305, then the motor mounts will interchange with a Chevy 350.
Subtract 305 from 350 and that will give you the difference (or interval) between the two numbers:- the answer is 45. However, if you mean what is the difference between a Chevy 305 and a Chevy 350, then it is the difference between the engine bore (the cylinder) sizes. The 305 bore is 3.740 inches. And the 350 bore is 4.000 inches, giving the Chevy 350 20HP more then the Chevy 305.
The 1985 Buick Regal did not offer the 305 V8 as an option that year.
Depends on how the motor is set up.
yes
the biggest difference is obviously the stroke and bore of the engine and the size of the engine
in the fuel inlet on the carb.
yes
Primarily the bore size. The 305 has a bore of 3.74 and the 350 is a 4.0 bore. They share the same stroke on the crank. And no, you can't bore a 305 to a 4.0 bore.
Nothing.
I believe the 305 TBI was in the RS models. the Z28 had 305 ad 350 TPI (tuned port injection)
The Chevy small block V8 305 cubic inch engine was manufactured between 1976 and 1996. It was used in cars and trucks.