I weighed one recently, and kept a record of the weight of the components and assembly.
Complete 350 w/alum heads and intake, water pump, alt., carb, dist. No starter, no water 451 lbs
An engine with iron heads would be 40 pounds more, iron intake is an additional 25 pounds. So...it all depends.
Trywww.remanufactured.com/Chevrolet_6_Cylinder_Engines.htm
Nothing at all. A long block is the complete engine. A short block is just the engine with no intake, exhaust, or accessories installed.
A cast iron Chevy 350 long block with the casting number 10243880 weighs 410 pounds. The engine will way even more once the intake and accessories are installed.
Mine is a long bed, small block standard cab, and at nthe dump it weighs 4450.
A long block. A short block would be without the heads.
A short block. A long block is a complete engine ready to install.
The BLOCK is the same other then the 97 is a roller cam block. If you are asking if a COMPLETE 1994 engine will work in a 1997 then NO it won't. If I have not answered your question then it is because I don't know what you are trying to do.
As long as the 350 block is under the year 1986. Then all of the external engine parts will interchange. The heads and intake will also interchange. The CRANK AND RODS AND PISTONS WILL NO INTERCHANGE.
They should be interchangeable as long as they are both flat tappet engines (not roller).
I would assume it means a "short block" engine, as opposed to a "long block" engine used with manual transmissions.
It is about 3 inches long and has a electrical connecter hooked to it. You can find it back by the distributor shaft, just behind it and it is screewed into the top of the engine block.
As long as the 350 is a fuel injected engine / TBI / Throttle Body Injection engine there is NO difference.