I have a 1984 Winnie RV. It has a 5.7L V8, and gets about 6-8 mpg.
It produces 160 hp, and 250 lb/ft of torque.
It has a 0-60 time of “eventually”. It will cruise at 55, it does not like going faster than that.
Driving this vehicle requires a completely different mindset…
ETA: I think it (LT-9) is a modified but similar engine to the ‘vette engine mentioned (L83).