Oldsmobile used to make a 307 V8, but it has nothing in common with a Chevy V8.
No
yes
yes
No
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Despite being nearly the same size, they are 2 very different engines
the block & heads are the same you just have to pull the 305 out & put the 350 back in
Not usually.
Oldsmobile used Chevy 305's. 76 350 rocket 77 305 Chevy
Is a 2.8 liter engine a 305?
There is basically no difference. 305 is a Chevy engine and the 307 is a Cadillac engine. They are both the same and assembled by same company Well, on the other hand, it depends on how you look at it. The 305 Chevy is a 265 stroked with a 350 crank. The 307 Chevy is a 283 stroked with a 327 crank. In theory, the 305 should produce it's best torque at a lower rpm than the 307. However, the 307 should be able to rev higher and produce a higher peak horsepower. Kinda depends on what you need it for. There is also a 307 produced by Oldsmobile that is a V8 engine. It shares no other commonalities with a small block Chevy.
There is no information on the internet about what the special feature of the Chevy 305 engine is, in fact, the Chevy 305 and 350 are interchangeable, one is just an older model.