Every 24 and 25 came out of the factory with something different, no two are alike. The engines will more than likely be the GE CJ-610-6 or -8A, both with 2950 lbs. of thrust. There is also a -1 & -4, but I think those were only on the 23's.
As for fuel, again, it depends on the airplane. There are 9 fuel pumps. 4 jet pumps, 2 boost pumps 2 engine driven, and 1 fuel transfer pump in the fuselage tank. On a/c not equipped with a fuselage tank (24F and 25F i think) you won't have the transfer pump for a grand total of 8. These models are rare though. Total quantity: depends on the airplane (get the picture).
Low fuel warning light comes on with approx. 500 lbs/side. It's 1000 on the one I fly (24D with the XR wing).
Vmo: depends on the airplane, 308 or 360
Gear and Flap speeds: guess what, depends on the a/c.
AFC/SS (autopilot) inop: .79
Can't use thrust reversers and drag chute at the same time if equipped with both. The exhaust from the engines in reverse won't allow the chute to fully inflate.
Max altitude: FL450
There are about 7 different electrical systems, so I won't even start on them, except for the basics:
(2) 28V, 400A Starter Generators
(2) 24V batteries
For battery starts, must have at least 23 volts if using NiCad batteries, 24 if using Lead/Acid.
For GPU starts, Max 28v and 1100 amps. Any more amperage could over torque the tower shaft in the engines gearbox. (that's bad)
Above FL 370, when you are going to decend, if you pull the power back too far you will lose pressurization. Pull the power back until the cabin rate of climb indicator starts to rise. Below FL370, you can go to idle.
They're great airplanes, it's like a little fighter. Push the power levers forward and point the nose up and hold on. I've made it from takeoff to FL410 in 15 minutes at max takeoff weight (15,000 in the XR I fly, 13,500 normally).
They do great on 1 engine. I blew one at FL430. They'll easily do 300 kts. on the 1 engine.
Stay as high as you can as long as possible. You burn the same amount of fuel at idle on the ground as you do at FL410 in cruise. Fuel burn increases tremendously as you decend.
Heed our warnings or your future will be underpant free!