Originally Posted by FourFourty
Come to think of it, the nautique 450hp is an LS3 as well, right?? In that case, I am not so surprised that it gets that kind of fuel economy. GenIV SBCs are excellent on fuel!
nope. PCM's ZR450 is L96 based, not LS3. that engine's displacement = 6L, LS3's is 6.2