Most likely the head gasket, look for milky oil, low coolant, inspect around engine where head meets block, look for signs of coolant or oil leaks there. If that's not it its probably not worth fixing.
Possibly one of the cylinders is misfiring. Try a tune-up and/or check the cylinder compression of all 4 cylinders.
How to reset or turn off the VTD-Cranking signal on a 1996 Pontiac Grand Am SE 2.4 Twin Cams
"V" represents the opposing positions of the cylinders, just like a V-8 engine. The bottom of the "V" in the location of the crankshaft and each leg is the cylinders. "Twin" simply means there are 2 cylinders on each leg of the "V". Therefore a "V-twin" is a 4 cylinder engine.
The Third Twin was created in 1996.
The 1923 Packard "twin six" is the first I have heard of.
"NO" compression - most likely timing belt / chain, assuming v6 2.7
It has a Twin Supercharged 4.7l V8 emmiting 806bhp
12 cylinder engine twin turbo stock intercooler
Twin Cobra II was created in 1996.
Yes, it will fit they are the same exact engine.
Salcedo Park Twin Towers was created in 1996.
The Unexplained - 1996 The Twin Connection 3-3 was released on: USA: 11 September 1997