Yes it is and its the easyest to do.
10w40 would be a good choice for this engine.
Yes it is a very good engine...
That would be the very first v-8 Chevy made. 265 CID engine. It will be hard to find. The good o 350 engine is a good 1 to modify also. IF DOON RIGHT.
yes.
A Chevy 454 engine can be obtained when one goes to a Chevy dealer, an auto shop, or a body shop. The engine is a pretty good one as it delivers 240HP and 355 torque.
Because it is a good engine.
With regular maintenence the 4.3L is a good engine, good for at least 200K.
Unless you need lots of towing power, I would opt for the 5.3. A very good engine.
yes
That totally depends on how MUCH MONEY your wanting to spend. Myself I wouldn't spend any money on a 305 engine. I would get me a good 350 engine to build.
If the check engine light has come on, have the codes read. That would be a good place to start.
If were talking about a 3.5l engine from chevy, then yes. they put allot of money in testing this engine and gave it good gas mileage horsepower and torque.