NO The bore and stroke is different.
the block & heads are the same you just have to pull the 305 out & put the 350 back in
305 is the same distributor as a 350 will even fit some big block chevy's.
yes, a 305 and 350 utilize the same block
yes
If the Buick 305 is really a Chevy 305, then the motor mounts will interchange with a Chevy 350.
The headers for a 350 and 305 are the same.
No they are not.
no on a 350 it is on the driver side and on a 305 it is on the passenger side
You will need to have the heads for the 305 bored out to the same size as the 350. I disagree: you can use the 305 heads on the 350 block but you will increase compression as the 305 heads have a smaller combustion chamber. The critical dimension is valve clearance. If compression ratio is a critical consideration, different pistons may be available which will bring the combustion chamber back to size. the 305 is from the 3.671 inch bore family. The 350 is from the 4.00 inch bore family. All small block heads have the same bolt pattern.
yes
yes
Yes their the same block....