well maybe you blew the timing belt or the piston or bent the valves Could be you have a badly cracked head or a failed head gasket that is leaking. Or if the car has a zillion miles on her, the pistion rings could be shot. Yeah, you don't really care why; fact is you're looking for a new engine anyway, sorry to say Phil
Normal engine compression would be 100-125psi
Only if u used the transsmission, engine computer and motor mounts from the 01
The Diesel
The engine would not run. The engine would lack compression.
An engine compression test on a 99 Grand Prix GTP can cost $180
The Cylinder head could be damaged or a ring out of place, causing the release of air, making less compression
on any engine good compression would be anything over 100psi, though really good can be up to 150+ anything under 90psi and your engine will not run.
You would first need to measure the schematics.It would be impossible if its too wide, though if it is too high, ?you can have a hood with the engine sticking out.
The "T" code 2.4 was in the '96-'01 grand AM, but only the '99-'02 cavilers had the same engine (the Z24 had the exact same engine). I believe that previous caviler had a 2.3 GM had many cars with that engine though: '96-'01 sunfire '97-'99 malibu '99-'01 alero '99-'02 caviler '96-'01 grand AM '96-'98 achieva these cars would all work. A lot more modifications would be needed to do your conversion. It's not impossible but it would not be a direct bolt up
The piston rings may be worn out .
your answer is not easy. do you want ratio or compression pressure. I would guess you are talking pressure, which on a stock engine is around 155 lbs.
many would simply call it a diesel engine, in reference to the most commonly used fuel for them.