2.4l engines are basically the same. There may be slight changes over different years like sensor changes or mounting brackets.
1988 to 1995 are the same engines. They will all be a direct bolt in.
The firing order for the Chevy 4.3 is 165432. This order is the same for all of the Chevy 4.2 engines regardless of year.
NO, Not even close to being the same design. In late 1999 Chevy REDESIGNED all the transmissions and engines.
NO. In 2000 chevy redesigned all the bodys,engines,transmissions and frames.
The same year they changed over to electronic fuel injection for all Chevy V-8 engines. Either 1984 or 1985.
NO. Depends on the year. On the pre-fuel injected motors, all Chevy V-8 engines used the same distributor. Use some common sense, a 1968 distributor is not the same as a 1980, but you get the idea. Use one from the same era as your vehicle.
Far too many to list
I believe all Astros have fuel injected engines.
All engines have a PCV valve.
no
All Chevy V8 engines have the same firing order with a few FI Applications. 1,3,5,7 is the left bank, 2,4,6,8 is the right bank and the distributor rotates clockwise. 1,8,4,3,6,5,7,2
Yes it will fit right in there. A small block Chevy is a small block Chevy. The only thing that is different is the fuel system. All small block Chevy engines are the same it does not matter. Chevy did not redesign the engine blocks until late 2000. But in your case the 2 ingines are the same. Put it in there.